├── .gitignore
├── Dockerfile
├── LICENSE
├── Makefile
├── README.md
├── docker-compose.yml
├── docs
    └── diagrams
    │   ├── Creational.md
    │   └── Structural.md
├── example
    ├── abstract_factory.php
    ├── adapter.php
    ├── autoloader.php
    ├── bridge.php
    ├── builder.php
    ├── chain_of_responsibility.php
    ├── command.php
    ├── composite.php
    ├── decorator.php
    ├── facade.php
    ├── factory_method.php
    ├── flyweight.php
    ├── interpreter.php
    ├── iterator.php
    ├── mediator.php
    ├── memento.php
    ├── money.php
    ├── null_object.php
    ├── object_pool.php
    ├── observer.php
    ├── prototype.php
    ├── proxy.php
    ├── singleton.php
    ├── state.php
    ├── strategy.php
    ├── template_method.php
    └── visitor.php
├── logo.png
└── src
    ├── AbstractFactory
        ├── AmericanOrderFactory.php
        ├── GermanOrderFactory.php
        ├── OrderManagementAbstractFactory.php
        └── Product
        │   ├── CarrierCompanyInterface.php
        │   ├── DHLCarrier.php
        │   ├── FedexCarrier.php
        │   ├── PaymentGatewayInterface.php
        │   ├── PaypalPaymentGateway.php
        │   └── StripePaymentGateway.php
    ├── Adapter
        ├── Component
        │   └── UserScore.php
        ├── OldIntegration.php
        ├── ScoreIntegrationAdapter.php
        └── ScoreIntegrationTarget.php
    ├── Bridge
        ├── AboutPage.php
        ├── DarkTheme.php
        ├── HomePage.php
        ├── LightTheme.php
        ├── Theme.php
        └── WebPage.php
    ├── Builder
        ├── AbstractPaymentMethodBuilder.php
        ├── DirectDebitPaymentMethodBuilder.php
        ├── PaymentMethodDirector.php
        └── Product
        │   ├── PaymentMethod.php
        │   └── TypeEnum.php
    ├── ChainOfResponsibility
        ├── AbstractLogger.php
        ├── ConsoleLogger.php
        ├── ErrorLogger.php
        ├── FileLogger.php
        ├── LogLevelEnum.php
        └── Logger.php
    ├── Command
        ├── AbstractPostCommand.php
        ├── Component
        │   └── Post.php
        ├── CreatePostCommand.php
        ├── DeletePostCommand.php
        ├── PostManager.php
        └── UpdatePostCommand.php
    ├── Composite
        ├── Contact.php
        ├── GroupComposite.php
        └── MessengerComponent.php
    ├── Decorator
        ├── Character.php
        ├── CharacterDecorator.php
        ├── Classes
        │   ├── Archer.php
        │   ├── Knight.php
        │   └── Wizard.php
        └── Items
        │   ├── GoblinRing.php
        │   ├── HermesBoots.php
        │   ├── LighteningBoltOfZeus.php
        │   ├── Mjolnir.php
        │   ├── SwordOfTheDestiny.php
        │   └── TridentOfPoseidon.php
    ├── Facade
        ├── Component
        │   ├── BarCodeUtil.php
        │   ├── IntegrationSoapErp.php
        │   ├── MarketplaceIntegration.php
        │   ├── Product.php
        │   └── ProductRepository.php
        └── ProductFlowFacade.php
    ├── FactoryMethod
        ├── CalculatorFactory.php
        ├── ElectronicTaxStrategyFactory.php
        ├── FoodTaxStrategyFactory.php
        └── TaxFreeStrategyFactory.php
    ├── Flyweight
        ├── CarStoreFlyweight.php
        └── Component
        │   ├── Car.php
        │   ├── Characteristic.php
        │   └── ColorEnum.php
    ├── Interpreter
        ├── AuthorSearch.php
        ├── Component
        │   ├── BlogPost.php
        │   └── BlogPostRepository.php
        ├── DateSearch.php
        ├── Expression.php
        ├── SearchQueryInterpreter.php
        └── TitleSearch.php
    ├── Iterator
        ├── UserCollectionIterator.php
        └── UserColletion.php
    ├── Mediator
        ├── ChatRoom.php
        ├── ChatRoomMediator.php
        └── User.php
    ├── Memento
        ├── Caretaker.php
        ├── TextEditor.php
        ├── TextSnapshot.php
        └── TextSnapshotMemento.php
    ├── Money
        ├── Currency.php
        └── Money.php
    ├── NullObject
        ├── BaseEvent.php
        ├── Component
        │   ├── EventDispatcher.php
        │   ├── EventDispatcherInterface.php
        │   └── NullEventDispatcher.php
        └── InvoiceCreatedEvent.php
    ├── ObjectPool
        ├── DatabaseConnection.php
        └── DatabaseConnectionPool.php
    ├── Observer
        ├── Component
        │   ├── Invoice.php
        │   └── InvoiceEventType.php
        ├── EmailAlertListener.php
        ├── EventListener.php
        ├── InvoiceEventManager.php
        └── PushNotificationListener.php
    ├── Prototype
        ├── BookA.php
        ├── BookB.php
        └── BookPrototype.php
    ├── Proxy
        ├── Component
        │   └── Address.php
        ├── GoogleMapsIntegration.php
        ├── GoogleMapsIntegrationProxy.php
        └── GoogleMapsIntegrationSubject.php
    ├── Singleton
        └── DBConnectionSingleton.php
    ├── State
        ├── InvoiceContext.php
        ├── State.php
        ├── StateInvoiceApproved.php
        ├── StateInvoiceCanceled.php
        ├── StateInvoiceDelivered.php
        ├── StateInvoicePending.php
        └── StateInvoiceShipped.php
    ├── Strategy
        ├── Component
        │   └── Product.php
        ├── Context.php
        ├── ElectronicTaxStrategy.php
        ├── FoodTaxStrategy.php
        ├── TaxCalculatorStrategy.php
        └── TaxFreeStrategy.php
    ├── TemplateMethod
        ├── CertificateGenerator.php
        ├── Component
        │   └── StudentDto.php
        ├── DevCertificateGenerator.php
        ├── MarketingCertificateGenerator.php
        └── PhotoCertificateGenerator.php
    └── Visitor
        ├── AdminUser.php
        ├── CanEditVisitor.php
        ├── EditorUser.php
        ├── RoleVisitor.php
        ├── User.php
        └── ViewerUser.php


/.gitignore:
--------------------------------------------------------------------------------
1 | .idea


--------------------------------------------------------------------------------
/Dockerfile:
--------------------------------------------------------------------------------
1 | FROM php:8.2-fpm-alpine
2 | COPY . /app
3 | WORKDIR /app
4 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | MIT License
 2 | 
 3 | Copyright (c) 2021 Gabriel Anhaia
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/Makefile:
--------------------------------------------------------------------------------
  1 | .PHONY: help
  2 | 
  3 | COLOR_RESET   = \033[0m
  4 | COLOR_INFO    = \033[32m
  5 | COLOR_COMMENT = \033[33m
  6 | COLOR_TITLE = \033[0;31m
  7 | 
  8 | help:
  9 | 		@echo " ${COLOR_TITLE}> GENERAL COMMANDS:${COLOR_RESET}"
 10 | 		@echo "   ${COLOR_COMMENT}# make${COLOR_RESET} ${COLOR_INFO}build${COLOR_RESET} (Docker command)"
 11 | 		@echo " ${COLOR_TITLE}> LIST OF DESIGN PATTERNS AVAILABLE WITH HELP COMMANDS:${COLOR_RESET}"
 12 | 		@echo "   ${COLOR_COMMENT}Abstract Factory:${COLOR_RESET}    	 ${COLOR_INFO}# make abstract-factory${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make abstract-factory-help${COLOR_RESET}"
 13 | 		@echo "   ${COLOR_COMMENT}Adapter:${COLOR_RESET}           		 ${COLOR_INFO}# make adapter${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make adapter-help${COLOR_RESET}"
 14 | 		@echo "   ${COLOR_COMMENT}Builder:${COLOR_RESET}           		 ${COLOR_INFO}# make builder${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make builder-help${COLOR_RESET}"
 15 | 		@echo "   ${COLOR_COMMENT}Composite:${COLOR_RESET}         		 ${COLOR_INFO}# make composite${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make composite-help${COLOR_RESET}"
 16 | 		@echo "   ${COLOR_COMMENT}Decorator:${COLOR_RESET}         		 ${COLOR_INFO}# make decorator${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make decorator-help${COLOR_RESET}"
 17 | 		@echo "   ${COLOR_COMMENT}Facade:${COLOR_RESET}            		 ${COLOR_INFO}# make facade${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make facade-help${COLOR_RESET}"
 18 | 		@echo "   ${COLOR_COMMENT}Factory Method:${COLOR_RESET}    		 ${COLOR_INFO}# make factory-method${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make factory-method-help${COLOR_RESET}"
 19 | 		@echo "   ${COLOR_COMMENT}Flyweight:${COLOR_RESET}         		 ${COLOR_INFO}# make flyweight${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make flyweight-help${COLOR_RESET}"
 20 | 		@echo "   ${COLOR_COMMENT}Iterator:${COLOR_RESET}          		 ${COLOR_INFO}# make iterator${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make iterator-help${COLOR_RESET}"
 21 | 		@echo "   ${COLOR_COMMENT}Memento:${COLOR_RESET}           		 ${COLOR_INFO}# make memento${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make memento-help${COLOR_RESET}"
 22 | 		@echo "   ${COLOR_COMMENT}Money:${COLOR_RESET}             		 ${COLOR_INFO}# make money${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make money-help${COLOR_RESET}"
 23 | 		@echo "   ${COLOR_COMMENT}Null Object:${COLOR_RESET}       		 ${COLOR_INFO}# make null-object${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make null-object-help${COLOR_RESET}"
 24 | 		@echo "   ${COLOR_COMMENT}Observer:${COLOR_RESET}          		 ${COLOR_INFO}# make observer${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make observer-help${COLOR_RESET}"
 25 | 		@echo "   ${COLOR_COMMENT}Prototype:${COLOR_RESET}         		 ${COLOR_INFO}# make prototype${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make prototype-help${COLOR_RESET}"
 26 | 		@echo "   ${COLOR_COMMENT}Proxy:${COLOR_RESET}             		 ${COLOR_INFO}# make proxy${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make proxy-help${COLOR_RESET}"
 27 | 		@echo "   ${COLOR_COMMENT}Singleton:${COLOR_RESET}         		 ${COLOR_INFO}# make singleton${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make singleton-help${COLOR_RESET}"
 28 | 		@echo "   ${COLOR_COMMENT}State:${COLOR_RESET}             		 ${COLOR_INFO}# make state${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make state-help${COLOR_RESET}"
 29 | 		@echo "   ${COLOR_COMMENT}Strategy:${COLOR_RESET}          		 ${COLOR_INFO}# make strategy${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make strategy-help${COLOR_RESET}"
 30 | 		@echo "   ${COLOR_COMMENT}Template Method:${COLOR_RESET}   		 ${COLOR_INFO}# make template-method${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make template-method-help${COLOR_RESET}"
 31 | 		@echo "   ${COLOR_COMMENT}Command:${COLOR_RESET}           		 ${COLOR_INFO}# make command${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make command-help${COLOR_RESET}"
 32 | 		@echo "   ${COLOR_COMMENT}Interpreter:${COLOR_RESET}       		 ${COLOR_INFO}# make interpreter${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make interpreter-help${COLOR_RESET}"
 33 | 		@echo "   ${COLOR_COMMENT}Bridge:${COLOR_RESET}       	   		 ${COLOR_INFO}# make bridge${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make bridge-help${COLOR_RESET}"
 34 | 		@echo "   ${COLOR_COMMENT}Visitor:${COLOR_RESET}       	   		 ${COLOR_INFO}# make visitor${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make visitor-help${COLOR_RESET}"
 35 | 		@echo "   ${COLOR_COMMENT}Mediator:${COLOR_RESET}          		 ${COLOR_INFO}# make mediator${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make mediator-help${COLOR_RESET}"
 36 | 		@echo "   ${COLOR_COMMENT}Object Pool:${COLOR_RESET}        	 ${COLOR_INFO}# make object-pool${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make object-pool-help${COLOR_RESET}"
 37 | 		@echo "   ${COLOR_COMMENT}Chain of Responsibility:${COLOR_RESET} ${COLOR_INFO}# make chain-of-responsibility${COLOR_RESET} ${COLOR_COMMENT}OR${COLOR_RESET} ${COLOR_INFO}# make chain-of-responsibility-help${COLOR_RESET}"
 38 | 
 39 | # Design Patterns Section
 40 | build:
 41 | 	docker build -t design-patterns .
 42 | 
 43 | strategy:
 44 | 	docker run -it design-patterns php /app/example/strategy.php
 45 | 
 46 | template-method:
 47 | 	docker run -it design-patterns php /app/example/template_method.php
 48 | 
 49 | adapter:
 50 | 	docker run -it design-patterns php /app/example/adapter.php
 51 | 
 52 | null-object:
 53 | 	docker run -it design-patterns php /app/example/null_object.php
 54 | 
 55 | facade:
 56 | 	docker run -it design-patterns php /app/example/facade.php
 57 | 
 58 | builder:
 59 | 	docker run -it design-patterns php /app/example/builder.php
 60 | 
 61 | observer:
 62 | 	docker run -it design-patterns php /app/example/observer.php
 63 | 
 64 | decorator:
 65 | 	docker run -it design-patterns php /app/example/decorator.php
 66 | 
 67 | money:
 68 | 	docker run -it design-patterns php /app/example/money.php
 69 | 
 70 | factory-method:
 71 | 	docker run -it design-patterns php /app/example/factory_method.php
 72 | 
 73 | abstract-factory:
 74 | 	docker run -it design-patterns php /app/example/abstract_factory.php
 75 | 
 76 | proxy:
 77 | 	docker run -it design-patterns php /app/example/proxy.php
 78 | 
 79 | singleton:
 80 | 	docker run -it design-patterns php /app/example/singleton.php
 81 | 
 82 | memento:
 83 | 	docker run -it design-patterns php /app/example/memento.php
 84 | 
 85 | flyweight:
 86 | 	docker run -it design-patterns php /app/example/flyweight.php
 87 | 
 88 | composite:
 89 | 	docker run -it design-patterns php /app/example/composite.php
 90 | 
 91 | state:
 92 | 	docker run -it design-patterns php /app/example/state.php
 93 | 
 94 | prototype:
 95 | 	docker run -it design-patterns php /app/example/prototype.php
 96 | 
 97 | iterator:
 98 | 	docker run -it design-patterns php /app/example/iterator.php
 99 | 
100 | command:
101 | 	docker run -it design-patterns php /app/example/command.php
102 | 
103 | interpreter:
104 | 	docker run -it design-patterns php /app/example/interpreter.php
105 | 
106 | bridge:
107 | 	docker run -it design-patterns php /app/example/bridge.php
108 | 
109 | visitor:
110 | 	docker run -it design-patterns php /app/example/visitor.php
111 | 
112 | mediator:
113 | 	docker run -it design-patterns php /app/example/mediator.php
114 | 
115 | object-pool:
116 | 	docker run -it design-patterns php /app/example/object_pool.php
117 | 
118 | chain-of-responsibility:
119 | 	docker run -it design-patterns php /app/example/chain_of_responsibility.php
120 | 
121 | # Help Section
122 | 
123 | abstract-factory-help:
124 | 		@echo "${COLOR_INFO}\n\t> The Abstract Factory pattern provides a way to encapsulate a group of individual factories that have a common theme.${COLOR_RESET}\n"
125 | 
126 | adapter-help:
127 | 		@echo "${COLOR_INFO}\n\t> The Adapter pattern converts the interface of a class into another interface the clients expect.${COLOR_RESET}\n"
128 | 
129 | builder-help:
130 | 		@echo "${COLOR_INFO}\n\t> The Builder pattern separates the construction of a complex object from its representation.${COLOR_RESET}\n"
131 | 
132 | composite-help:
133 | 		@echo "${COLOR_INFO}\n\t> The Composite pattern composes objects into tree structures to represent part-whole hierarchies.${COLOR_RESET}\n"
134 | 
135 | decorator-help:
136 | 		@echo "${COLOR_INFO}\n\t> The Decorator pattern dynamically adds/overrides behaviour in an existing method of an object.${COLOR_RESET}\n"
137 | 
138 | facade-help:
139 | 		@echo "${COLOR_INFO}\n\t> The Facade pattern provides a simplified interface to a larger body of code.${COLOR_RESET}\n"
140 | 
141 | factory-method-help:
142 | 		@echo "${COLOR_INFO}\n\t> The Factory Method pattern defines an interface for creating an object, but lets subclasses decide which class to instantiate.${COLOR_RESET}\n"
143 | 
144 | flyweight-help:
145 | 		@echo "${COLOR_INFO}\n\t> The Flyweight pattern minimizes memory use by sharing as much data as possible with other similar objects.${COLOR_RESET}\n"
146 | 
147 | iterator-help:
148 | 		@echo "${COLOR_INFO}\n\t> The Iterator pattern provides a way to access the elements of an aggregate object sequentially without exposing its underlying representation.${COLOR_RESET}\n"
149 | 
150 | memento-help:
151 | 		@echo "${COLOR_INFO}\n\t> The Memento pattern provides the ability to restore an object to its previous state.${COLOR_RESET}\n"
152 | 
153 | money-help:
154 | 		@echo "${COLOR_INFO}\n\t> The Money pattern helps in avoiding floating point arithmetic issues when dealing with money.${COLOR_RESET}\n"
155 | 
156 | null-object-help:
157 | 		@echo "${COLOR_INFO}\n\t> The Null Object pattern provides an object as a surrogate for the lack of an object of a given type.${COLOR_RESET}\n"
158 | 
159 | observer-help:
160 | 		@echo "${COLOR_INFO}\n\t> The Observer pattern defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified.${COLOR_RESET}\n"
161 | 
162 | prototype-help:
163 | 		@echo "${COLOR_INFO}\n\t> The Prototype pattern specifies the kind of object to create using a prototypical instance and creates new objects by copying this prototype.${COLOR_RESET}\n"
164 | 
165 | proxy-help:
166 | 		@echo "${COLOR_INFO}\n\t> The Proxy pattern provides a surrogate or placeholder for another object to control access to it.${COLOR_RESET}\n"
167 | 
168 | singleton-help:
169 | 		@echo "${COLOR_INFO}\n\t> The Singleton pattern ensures a class only has one instance, and provides a global point of access to it.${COLOR_RESET}\n"
170 | 
171 | state-help:
172 | 		@echo "${COLOR_INFO}\n\t> The State pattern allows an object to alter its behavior when its internal state changes.${COLOR_RESET}\n"
173 | 
174 | strategy-help:
175 | 		@echo "${COLOR_INFO}\n\t> The Strategy pattern defines a family of algorithms, encapsulate each one, and make them interchangeable.${COLOR_RESET}\n"
176 | 
177 | template-method-help:
178 | 		@echo "${COLOR_INFO}\n\t> The Template Method pattern defines the skeleton of an algorithm in an operation, deferring some steps to subclasses.${COLOR_RESET}\n"
179 | 
180 | command-help:
181 | 		@echo "${COLOR_INFO}\n\t> The Command pattern encapsulates a request as an object, thereby allowing users to parameterize other objects with queues, requests, and operations.${COLOR_RESET}\n"
182 | 
183 | interpreter-help:
184 | 		@echo "${COLOR_INFO}\n\t> The Interpreter pattern implements a specialized language.${COLOR_RESET}\n"
185 | 
186 | bridge-help:
187 | 		@echo "${COLOR_INFO}\n\t> The Bridge pattern decouples an abstraction from its implementation so that the two can vary independently. It promotes composition over inheritance.${COLOR_RESET}\n"
188 | 
189 | visitor-help:
190 | 		@echo "${COLOR_INFO}\n\t> The Visitor pattern defines a new operation to a class without change.${COLOR_RESET}\n"
191 | 
192 | mediator-help:
193 | 		@echo "${COLOR_INFO}\n\t> The Mediator pattern defines an object that encapsulates how a set of objects interact. It promotes loose coupling by keeping objects from referring to each other explicitly, and it lets you vary their interaction independently.${COLOR_RESET}\n"
194 | 
195 | object-pool-help:
196 | 		@echo "${COLOR_INFO}\n\t> The Object Pool pattern avoids expensive acquisition and release of resources by recycling objects that are no longer in use.${COLOR_RESET}\n"
197 | 
198 | chain-of-responsibility-help:
199 | 		@echo "${COLOR_INFO}\n\t> The Chain of Responsibility pattern avoids coupling the sender of a request to its receiver by giving more than one object a chance to handle the request.${COLOR_RESET}\n"


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
  1 | <img src="./logo.png" alt="Logo - PHP 8.1 Design Patterns"  width="80%" height="80%">
  2 | 
  3 | ![Licence](https://img.shields.io/badge/licence-MIT-blue)
  4 | ![Package Stars](https://img.shields.io/badge/stars-%E2%98%85%E2%98%85%E2%98%85%E2%98%85%E2%98%85-yellow)
  5 | [![Build Status](https://travis-ci.com/gabrielanhaia/php-circuit-breaker.svg?branch=master)](https://travis-ci.com/gabrielanhaia/php-circuit-breaker)
  6 | ![Code Coverage](https://img.shields.io/badge/coverage-100%25-green)
  7 | 
  8 | Every week a new Pattern + Article on www.medium.com/@anhaia.gabriel and www.medium.com/devwarlocks
  9 | 
 10 | # PHP 8.2+ - Design Patterns
 11 | 
 12 | This repository was created to show the implementation of various Design Patterns using PHP 8.2. There is no
 13 | dependency on a framework, and the examples are the most real as possible based on my own experiences solving real-life
 14 | problems. Applying the design pattern and its concept in any PHP project will be effortless once you learn the design
 15 | pattern and its concept.
 16 | 
 17 | ### Classification/Type
 18 | 
 19 | | Type                                                               | General Article                                                                                                           | Diagrams                                                                                                    |
 20 | |--------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------|
 21 | | ![Creational](https://img.shields.io/badge/Creational-light_green) | [LEARN HERE 📖](https://medium.com/devwarlocks/comparing-creational-design-patterns-making-the-right-choice-428cc351e926) | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Creational.md) |
 22 | | ![Structural](https://img.shields.io/badge/Structural-8A2BE2)      | SOON                                                                                                                      | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Structural.md)                                                                                                        |
 23 | | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | SOON                                                                                                                      | SOON                                                                                                        |
 24 | 
 25 | ## Patterns implemented + Article
 26 | 
 27 | | #  | 📖 Pattern              | Classification~Type                                                | Code Example / Implementation                                                              | ✍️ Article / Post 📚                                                                                    | Diagram                                                                                                  |                                                                             
 28 | |----|-------------------------|--------------------------------------------------------------------|--------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------|                                                          
 29 | | 1  | Abstract Factory        | ![Creational](https://img.shields.io/badge/Creational-light_green) | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/AbstractFactory) | SOON                                                                                                    | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Creational.md#abstract-factory) |
 30 | | 2  | Builder                 | ![Creational](https://img.shields.io/badge/Creational-light_green) | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Builder)         | SOON                                                                                                    | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Creational.md#builder)          |                                                                                                
 31 | | 3  | Factory Method          | ![Creational](https://img.shields.io/badge/Creational-light_green) | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/FactoryMethod)   | [LEARN HERE 📖](https://medium.com/devwarlocks/factory-method-pattern-php-design-patterns-3d1df7707c29) | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Creational.md#factory-method)   |
 32 | | 4  | Prototype               | ![Creational](https://img.shields.io/badge/Creational-light_green) | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Prototype)       | SOON                                                                                                    | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Creational.md#prototype)        |                                                                                                
 33 | | 5  | Singleton               | ![Creational](https://img.shields.io/badge/Creational-light_green) | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Singleton)       | SOON                                                                                                    | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Creational.md#singleton)        |                                                                                                
 34 | | 6  | Object Pool             | ![Creational](https://img.shields.io/badge/Creational-light_green) | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/ObjectPool)                                                                                       | SOON                                                                                                    | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Creational.md#object-pool)      |
 35 | | 7  | Adapter                 | ![Structural](https://img.shields.io/badge/Structural-8A2BE2)      | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Adapter)         | [LEARN HERE 📖 ](https://medium.com/mestredev/adapter-php-8-75e00034ae48)                               | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Structural.md#adapter)                                                                                                       |                           
 36 | | 8  | Composite               | ![Structural](https://img.shields.io/badge/Structural-8A2BE2)      | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Composite)       | [LEARN HERE 📖](https://medium.com/devwarlocks/composite-php-desing-patterns-dd01b1d010f7)              | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Structural.md#composite)                                                                                                      |                                                                                               
 37 | | 9  | Bridge                  | ![Structural](https://img.shields.io/badge/Structural-8A2BE2)      | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Bridge)          | SOON                                                                                                    | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Structural.md#bridge)                                                                                                      |
 38 | | 10 | Facade                  | ![Structural](https://img.shields.io/badge/Structural-8A2BE2)      | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Facade)          | [LEARN HERE 📖 ](https://medium.com/mestredev/facade-php-8-design-patterns-40b1ef8566b5)                | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Structural.md#facade)                                                                                                      |           
 39 | | 11 | Decorator               | ![Structural](https://img.shields.io/badge/Structural-8A2BE2)      | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Decorator)       | SOON                                                                                                    | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Structural.md#decorator)                                                                                                      |
 40 | | 12 | Flyweight               | ![Structural](https://img.shields.io/badge/Structural-8A2BE2)      | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Flyweight)       | SOON                                                                                                    | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Structural.md#flyweight)                                                                                                      |
 41 | | 13 | Proxy                   | ![Structural](https://img.shields.io/badge/Structural-8A2BE2)      | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Proxy)           | SOON                                                                                                    | [HERE](https://github.com/gabrielanhaia/php-design-patterns/blob/main/docs/diagrams/Structural.md#proxy)                                                                                                      |                                                                                                
 42 | | 14 | Template Method         | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/TemplateMethod)  | [LEARN HERE 📖 ](https://medium.com/mestredev/template-method-php-8-a357f3665a4b)                       | SOON                                                                                                     |                    
 43 | | 15 | Strategy                | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Strategy)        | [LEARN HERE 📖 ](https://medium.com/mestredev/strategy-in-php-8-design-patterns-2044e5ef54ed)           | SOON                                                                                                     |       
 44 | | 16 | Iterator                | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Iterator)        | SOON                                                                                                    | SOON                                                                                                     |
 45 | | 17 | Memento                 | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Memento)         | SOON                                                                                                    | SOON                                                                                                     |
 46 | | 18 | Money                   | ![X](https://img.shields.io/badge/X-grey)                          | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Money)           | [LEARN HERE 📖](https://medium.com/devwarlocks/money-pattern-with-symfony-framework-55eff713b3d5)       | SOON                                                                                                     |
 47 | | 19 | Null Object             | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/NullObject)      | SOON                                                                                                    | SOON                                                                                                     |                                                                                                
 48 | | 20 | Observer                | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Observer)        | [LEARN HERE 📖](https://medium.com/devwarlocks/observer-php-design-patterns-a4367b137324)               | SOON                                                                                                     |                                                                                               
 49 | | 21 | State                   | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/State)           | SOON                                                                                                    | SOON                                                                                                     |                                                                                                
 50 | | 22 | Command                 | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Command)         | SOON                                                                                                    | SOON                                                                                                     |
 51 | | 23 | Chain of Responsibility | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/ChainOfResponsibility)                                                                                       | SOON                                                                                                    | SOON                                                                                                     |
 52 | | 24 | Interpreter             | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Interpreter)     | SOON                                                                                                    | SOON                                                                                                     |
 53 | | 25 | Mediator                | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Mediator)        | SOON                                                                                                    | SOON                                                                                                     |
 54 | | 26 | Visitor                 | ![Behavioral](https://img.shields.io/badge/Behavioral-red)         | [HERE](https://github.com/gabrielanhaia/php-design-patterns/tree/main/src/Visitor)         | [LEARN HERE 📖](https://medium.com/devwarlocks/visitor-php-design-patterns-289224470ebd)                | SOON                                                                                                     |
 55 | 
 56 | ## Dependencies
 57 | 
 58 | - [Docker](https://www.docker.com)
 59 | 
 60 | ## Running the project
 61 | 
 62 | I strongly recommend that you follow the articles (links above) and run them with Docker. It will be much easier, and
 63 | you
 64 | need to install Docker on your computer, independent of the OS you are using. With a few commands, you will run/test all
 65 | the Design Patterns implemented throughout the course.
 66 | 
 67 | #### 1. Build the container:
 68 | 
 69 | ```bash 
 70 | docker build -t design-patterns .
 71 | ``` 
 72 | 
 73 | or if you prefer
 74 | 
 75 | ```bash
 76 | make build
 77 | ```
 78 | 
 79 | #### 2. Run the following commands to test the design patterns:
 80 | 
 81 | ```bash
 82 | make help
 83 | ``` 
 84 | 
 85 | and then you will see the list of commands
 86 | 
 87 | #### 3. You need to run the command with the pattern you want to test, for example:
 88 | 
 89 | ```bash
 90 | make strategy
 91 | ```
 92 | 
 93 | #### 4. In case you want to see a short description of the pattern, you can run the `make PATTERN_NAME-help`, for example:
 94 | 
 95 | ```bash
 96 | make strategy-help
 97 | ```
 98 | 
 99 | With that, you should see a one-line description of the pattern.
100 | 
101 | ## Additional Information
102 | 
103 | - If you take a look at the examples in the blog or inside the folders `/src/{$pattern_name}/` you will notice that
104 |   almost
105 |   All the examples contain a folder called `components`; those folders are the files/classes used to demonstrate how to
106 |   use each pattern. Never consider what is in there as part of the pattern! They are not examples to be followed in your
107 |   applications.
108 | 


--------------------------------------------------------------------------------
/docker-compose.yml:
--------------------------------------------------------------------------------
1 | version: "3.9"
2 | services:
3 |   web:
4 |     build: .
5 |     volumes:
6 |       - .:/app
7 | 


--------------------------------------------------------------------------------
/docs/diagrams/Creational.md:
--------------------------------------------------------------------------------
 1 | # Creational Patterns
 2 | 
 3 | ## Abstract Factory
 4 | 
 5 | ```mermaid
 6 | classDiagram
 7 |     Client -- AbstractFactory : Uses
 8 |     AbstractFactory <|.. ConcreteFactory1 : Implements
 9 |     AbstractFactory <|.. ConcreteFactory2 : Implements
10 |     AbstractFactory : +createProductA()
11 |     AbstractFactory : +createProductB()
12 |     Client -- AbstractProductA : Uses
13 |     Client -- AbstractProductB : Uses
14 |     AbstractProductA <|.. ProductA1 : Implements
15 |     AbstractProductA <|.. ProductA2 : Implements
16 |     AbstractProductB <|.. ProductB1 : Implements
17 |     AbstractProductB <|.. ProductB2 : Implements
18 |     ConcreteFactory1 : +createProductA()
19 |     ConcreteFactory1 : +createProductB()
20 |     ConcreteFactory2 : +createProductA()
21 |     ConcreteFactory2 : +createProductB()
22 | ```
23 | 
24 | ---
25 | 
26 | ## Builder   
27 | 
28 | ```mermaid
29 | classDiagram
30 |     Client -- Director : Uses
31 |     Director o-- Builder : Uses
32 |     Builder <|.. ConcreteBuilder : Implements
33 |     Builder : +buildPartA()
34 |     Builder : +buildPartB()
35 |     Builder : +getProduct()
36 |     ConcreteBuilder : +buildPartA()
37 |     ConcreteBuilder : +buildPartB()
38 |     ConcreteBuilder : +getProduct()
39 |     Product <-- ConcreteBuilder : Builds
40 |     Director : +construct()
41 | 
42 | ```
43 | 
44 | ---
45 | 
46 | ## Factory Method  
47 | 
48 | ```mermaid
49 | classDiagram
50 |     Client -- Creator : Uses
51 |     Creator <|.. ConcreteCreator : Implements
52 |     Creator : +factoryMethod()
53 |     Product <-- Creator : Creates
54 |     ConcreteCreator : +factoryMethod()
55 |     Product <|.. ConcreteProduct : Implements
56 |     ConcreteProduct <-- ConcreteCreator : Creates
57 | ```
58 | 
59 | ---
60 | 
61 | ## Prototype
62 | 
63 | ```mermaid
64 | classDiagram
65 |     Client -- Prototype : Uses
66 |     Prototype <|.. ConcretePrototype : Implements
67 |     Prototype : +clone()
68 |     ConcretePrototype : +clone()
69 |     Client -- ConcretePrototype : Creates clones
70 | ```
71 | 
72 | ---
73 | 
74 | ## Singleton
75 | 
76 | ```mermaid
77 | classDiagram
78 |     Client -- Singleton : Uses
79 |     Singleton : -Singleton() Private
80 |     Singleton : +getInstance() Static
81 | ```
82 | 
83 | ---
84 | 
85 | ## Object Pool
86 | 
87 | ```mermaid
88 | classDiagram
89 |     Client -- ObjectPool : Uses
90 |     ObjectPool : +acquireReusable()
91 |     ObjectPool : +releaseReusable(Reusable)
92 |     Reusable <-- ObjectPool : Manages
93 | ```
94 | 


--------------------------------------------------------------------------------
/docs/diagrams/Structural.md:
--------------------------------------------------------------------------------
  1 | # Structural Patterns
  2 | 
  3 | ## Adapter
  4 | 
  5 | ```mermaid
  6 | classDiagram
  7 |     class Target {
  8 |         +request(): void
  9 |     }
 10 | 
 11 |     class Adapter {
 12 |         -adaptee: Adaptee
 13 |         +request(): void
 14 |     }
 15 | 
 16 |     class Adaptee {
 17 |         +specificRequest(): void
 18 |     }
 19 | 
 20 |     Target <|-- Adapter : adapts
 21 |     Adapter o-- Adaptee : has-a
 22 | 
 23 | ```
 24 | 
 25 | ---
 26 | 
 27 | ## Bridge
 28 | 
 29 | ```mermaid
 30 | classDiagram
 31 |     Client -- Abstraction : Uses
 32 |     Abstraction o-- Implementor : Uses
 33 |     Implementor <|.. ConcreteImplementorA : Implements
 34 |     Implementor <|.. ConcreteImplementorB : Implements
 35 |     Abstraction : +operation()
 36 |     Implementor : +operationImpl()
 37 |     ConcreteImplementorA : +operationImpl()
 38 |     ConcreteImplementorB : +operationImpl()
 39 | ```
 40 | 
 41 | ---
 42 | 
 43 | ## Decorator
 44 | 
 45 | ```mermaid
 46 | classDiagram
 47 |     Client -- Component : Uses
 48 |     Decorator --|> Component : Extends
 49 |     ConcreteDecoratorA --|> Decorator : Extends
 50 |     ConcreteDecoratorB --|> Decorator : Extends
 51 |     ConcreteComponent --|> Component : Implements
 52 |     Decorator o-- Component : Wraps
 53 |     Component : +operation()
 54 |     Decorator : +operation()
 55 |     ConcreteDecoratorA : +addedBehavior()
 56 |     ConcreteDecoratorB : +addedBehavior()
 57 | ```
 58 | 
 59 | ---
 60 | 
 61 | 
 62 | ## Facade
 63 | 
 64 | ```mermaid
 65 | classDiagram
 66 |     Client -- Facade : Uses
 67 |     Facade o-- SubsystemClassA : Uses
 68 |     Facade o-- SubsystemClassB : Uses
 69 | 
 70 |     class Facade {
 71 |         +operationWrapper()
 72 |     }
 73 | 
 74 |     class SubsystemClassA {
 75 |         +operationA()
 76 |     }
 77 | 
 78 |     class SubsystemClassB {
 79 |         +operationB()
 80 |     }
 81 | ```
 82 | 
 83 | ---
 84 | 
 85 | ## Proxy
 86 | 
 87 | ```mermaid
 88 | classDiagram
 89 |     class Subject {
 90 |         +request(): void
 91 |     }
 92 | 
 93 |     class RealSubject {
 94 |         +request(): void
 95 |     }
 96 | 
 97 |     class Proxy {
 98 |         -realSubject: RealSubject
 99 |         +request(): void
100 |     }
101 | 
102 |     Subject <|-- RealSubject
103 |     Subject <|-- Proxy
104 |     Proxy o-- RealSubject
105 | ```
106 | 
107 | 
108 | ---
109 | 
110 | ## Flyweight
111 | 
112 | ```mermaid
113 | classDiagram
114 |     class FlyweightFactory {
115 |         +getFlyweight(key): Flyweight
116 |     }
117 | 
118 |     class Flyweight {
119 |         +operation(extrinsicState): void
120 |     }
121 | 
122 |     class ConcreteFlyweight {
123 |         -intrinsicState: string
124 |         +operation(extrinsicState): void
125 |     }
126 | 
127 |     FlyweightFactory o-- Flyweight
128 |     Flyweight <|-- ConcreteFlyweight
129 | ```
130 | 
131 | 
132 | ---
133 | 
134 | ## Composite
135 | 
136 | ```mermaid
137 | classDiagram
138 |     class Component {
139 |         +operation(): void
140 |         +add(child: Component): void
141 |         +remove(child: Component): void
142 |         +getChild(index): Component
143 |     }
144 | 
145 |     class Leaf {
146 |         +operation(): void
147 |     }
148 | 
149 |     class Composite {
150 |         +operation(): void
151 |         +add(child: Component): void
152 |         +remove(child: Component): void
153 |         +getChild(index): Component
154 |     }
155 | 
156 |     Component <|-- Leaf
157 |     Component <|-- Composite
158 |     Composite o-- Component : contains
159 | ```
160 | 


--------------------------------------------------------------------------------
/example/abstract_factory.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\AbstractFactory\AmericanOrderFactory;
 4 | use App\AbstractFactory\GermanOrderFactory;
 5 | 
 6 | require_once 'autoloader.php';
 7 | 
 8 | $orderData = '[ORDER 123]';
 9 | 
10 | $americanOrderFactory = new AmericanOrderFactory();
11 | lns();ln();
12 | $americanOrderFactory->createCarrierCompany()->ship($orderData);
13 | ln();
14 | $americanOrderFactory->createPaymentGateway()->pay($orderData);
15 | ln();
16 | 
17 | // -------------
18 | 
19 | $germanOrderFactory = new GermanOrderFactory();
20 | lns();ln();
21 | $germanOrderFactory->createCarrierCompany()->ship($orderData);
22 | ln();
23 | $germanOrderFactory->createPaymentGateway()->pay($orderData);


--------------------------------------------------------------------------------
/example/adapter.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Adapter\OldIntegration;
 4 | use App\Adapter\ScoreIntegrationAdapter;
 5 | 
 6 | require_once 'autoloader.php';
 7 | 
 8 | $oldIntegration = new OldIntegration;
 9 | $integrationAdapter = new ScoreIntegrationAdapter($oldIntegration);
10 | 
11 | $userUuid = 'e605fa5f-f805-4ca8-ade2-908c8d5a8c4c';
12 | $users = $integrationAdapter->getUserScore($userUuid);
13 | 
14 | dump($users);
15 | 


--------------------------------------------------------------------------------
/example/autoloader.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | spl_autoload_register(function ($class) {
 4 |     $filePath = str_replace(['App\\', '\\'], ['src' . DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR], $class);
 5 |     $filePath = DIRECTORY_SEPARATOR
 6 |         . 'app'
 7 |         . DIRECTORY_SEPARATOR
 8 |         . $filePath
 9 |         . '.php';
10 | 
11 |     require_once $filePath;
12 | });
13 | 
14 | if (false === function_exists('dump')) {
15 |     function dump($data)
16 |     {
17 |         lns();
18 |         ln();
19 |         print_r($data);
20 |         ln();
21 |         lns();
22 |         ln();
23 |         ln();
24 |     }
25 | }
26 | 
27 | if (false === function_exists('dd')) {
28 |     function dd($data) {
29 |         dump($data);
30 |         die;
31 |     }
32 | };
33 | 
34 | if (false === function_exists('ln')) {
35 |     function ln(int $lines = 1)
36 |     {
37 |         for ($i = 0; $i < $lines; $i++) {
38 |             echo "\n";
39 |         }
40 |     }
41 | }
42 | 
43 | if (false === function_exists('lns')) {
44 |     function lns()
45 |     {
46 |         echo '---------------------------------';
47 |     }
48 | }


--------------------------------------------------------------------------------
/example/bridge.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Bridge\HomePage;
 4 | use App\Bridge\AboutPage;
 5 | use App\Bridge\DarkTheme;
 6 | use App\Bridge\LightTheme;
 7 | 
 8 | require_once 'autoloader.php';
 9 | 
10 | $darkTheme = new DarkTheme();
11 | $homePage = new HomePage($darkTheme);
12 | echo $homePage->getContent();
13 | 
14 | ln();
15 | 
16 | $lightTheme = new LightTheme();
17 | $aboutPage = new AboutPage($lightTheme);
18 | echo $aboutPage->getContent();


--------------------------------------------------------------------------------
/example/builder.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Builder\DirectDebitPaymentMethodBuilder;
 4 | use App\Builder\PaymentMethodDirector;
 5 | 
 6 | require_once 'autoloader.php';
 7 | 
 8 | $paymentMethodBuilderConcreteImplementation = new DirectDebitPaymentMethodBuilder();
 9 | $paymentMethodDirector = new PaymentMethodDirector($paymentMethodBuilderConcreteImplementation);
10 | 
11 | $paymentMethod = $paymentMethodDirector->buildPaymentMethod();
12 | 
13 | dump($paymentMethod);
14 | 
15 | // Note: You can use the Builder without the Director if you need.


--------------------------------------------------------------------------------
/example/chain_of_responsibility.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\ChainOfResponsibility\ConsoleLogger;
 4 | use App\ChainOfResponsibility\ErrorLogger;
 5 | use App\ChainOfResponsibility\FileLogger;
 6 | use App\ChainOfResponsibility\LogLevelEnum;
 7 | 
 8 | require_once 'autoloader.php';
 9 | 
10 | // Client code
11 | $consoleLogger = new ConsoleLogger(LogLevelEnum::INFO);
12 | $errorLogger = new ErrorLogger(LogLevelEnum::ERROR);
13 | $fileLogger = new FileLogger(LogLevelEnum::DEBUG);
14 | 
15 | $consoleLogger->setNext($errorLogger)->setNext($fileLogger);
16 | 
17 | // Make a request
18 | lns();ln();
19 | $consoleLogger->log("This is an informational message.", LogLevelEnum::INFO);
20 | lns();ln();
21 | $consoleLogger->log("This is an error message.", LogLevelEnum::ERROR);
22 | lns();ln();
23 | $consoleLogger->log("This is a debug message.", LogLevelEnum::DEBUG);


--------------------------------------------------------------------------------
/example/command.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Command\{CreatePostCommand, UpdatePostCommand, DeletePostCommand, PostManager};
 4 | use App\Command\Component\Post;
 5 | 
 6 | require_once 'autoloader.php';
 7 | 
 8 | $post = new Post('My first post', 'Hello world!');
 9 | $manager = new PostManager();
10 | lns();ln();
11 | 
12 | $createPostCommand = new CreatePostCommand($post);
13 | $manager->setCommand($createPostCommand);
14 | $manager->executeCommand();
15 | 
16 | ln();
17 | 
18 | $updatePostCommand = new UpdatePostCommand($post, 'My first post! Updated', 'Hello world! Updated!');
19 | $manager->setCommand($updatePostCommand);
20 | $manager->executeCommand();
21 | 
22 | ln();
23 | 
24 | $deletePostCommand = new DeletePostCommand($post);
25 | $manager->setCommand($deletePostCommand);
26 | $manager->executeCommand();
27 | 
28 | 
29 | 


--------------------------------------------------------------------------------
/example/composite.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Composite;
 4 | 
 5 | require_once 'autoloader.php';
 6 | 
 7 | $generalGroupWithAllSubGroups = new Composite\GroupComposite('General');
 8 | $organization1 = new Composite\GroupComposite('Organization1');
 9 | $phpDevelopersGroup = new Composite\GroupComposite('PHPDevs');
10 | 
11 | $gabriel = new Composite\Contact('Gabriel');
12 | $lucy = new Composite\Contact('Lucy');
13 | $john = new Composite\Contact('John');
14 | 
15 | $phpDevelopersGroup->add($gabriel);
16 | $phpDevelopersGroup->add($lucy);
17 | $phpDevelopersGroup->add($john);
18 | $organization1->add($phpDevelopersGroup);
19 | $generalGroupWithAllSubGroups->add($organization1);
20 | 
21 | dump($generalGroupWithAllSubGroups->operation());
22 | 


--------------------------------------------------------------------------------
/example/decorator.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Decorator\Classes\Knight;
 4 | use App\Decorator\Classes\Wizard;
 5 | use App\Decorator\Items\GoblinRing;
 6 | use App\Decorator\Items\HermesBoots;
 7 | use App\Decorator\Items\Mjolnir;
 8 | use App\Decorator\Items\TridentOfPoseidon;
 9 | 
10 | require_once 'autoloader.php';
11 | 
12 | // Knight Decorator example:
13 | 
14 | $knightDecorator = new Knight();
15 | $knightDecorator = new GoblinRing($knightDecorator);
16 | $knightDecorator = new Mjolnir($knightDecorator);
17 | $knightDecorator = new HermesBoots($knightDecorator);
18 | 
19 | lns();
20 | ln();
21 | echo sprintf('Class name `%s`', $knightDecorator->getName());
22 | ln();
23 | echo sprintf('Total Strength: `%s`', $knightDecorator->getTotalStrength());
24 | ln();
25 | echo sprintf('Total Agility: `%s`', $knightDecorator->getTotalAgility());
26 | ln();
27 | echo sprintf('Total Dexterity: `%s`', $knightDecorator->getTotalDexterity());
28 | ln();
29 | echo sprintf('Total Intelligence: `%s`', $knightDecorator->getTotalIntelligence());
30 | ln();
31 | echo sprintf('Total Luck: `%s`', $knightDecorator->getTotalLuck());
32 | ln();
33 | 
34 | // Wizard Decorator example:
35 | 
36 | $wizardDecorator = new Wizard();
37 | $wizardDecorator = new GoblinRing($wizardDecorator);
38 | $wizardDecorator = new GoblinRing($wizardDecorator);
39 | $wizardDecorator = new HermesBoots($wizardDecorator);
40 | $wizardDecorator = new TridentOfPoseidon($wizardDecorator);
41 | 
42 | lns();
43 | ln();
44 | echo sprintf('Class name `%s`', $wizardDecorator->getName());
45 | ln();
46 | echo sprintf('Total Strength: `%s`', $wizardDecorator->getTotalStrength());
47 | ln();
48 | echo sprintf('Total Agility: `%s`', $wizardDecorator->getTotalAgility());
49 | ln();
50 | echo sprintf('Total Dexterity: `%s`', $wizardDecorator->getTotalDexterity());
51 | ln();
52 | echo sprintf('Total Intelligence: `%s`', $wizardDecorator->getTotalIntelligence());
53 | ln();
54 | echo sprintf('Total Luck: `%s`', $wizardDecorator->getTotalLuck());


--------------------------------------------------------------------------------
/example/facade.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Facade\Component\IntegrationSoapErp;
 4 | use App\Facade\Component\MarketplaceIntegration;
 5 | use App\Facade\Component\ProductRepository;
 6 | use App\Facade\ProductFlowFacade;
 7 | 
 8 | require_once 'autoloader.php';
 9 | 
10 | $productRepository = new ProductRepository;
11 | $marketplaceIntegration = new MarketplaceIntegration;
12 | $integrationSoapErp = new IntegrationSoapErp;
13 | 
14 | $productFlowFacade = new ProductFlowFacade($productRepository, $marketplaceIntegration, $integrationSoapErp);
15 | 
16 | $products = [
17 |     ['name' => 'Nice Mug', 'price' => 10.5, 'stock' => 50],
18 |     ['name' => 'Smartphone Model X', 'price' => 100, 'stock' => 1000],
19 | ];
20 | $productFlowFacade->createProducts($products);


--------------------------------------------------------------------------------
/example/factory_method.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\FactoryMethod;
 4 | use App\Strategy\Component\Product;
 5 | 
 6 | require_once 'autoloader.php';
 7 | 
 8 | $factoryMethod1 = new FactoryMethod\ElectronicTaxStrategyFactory();
 9 | $factoryMethod2 = new FactoryMethod\FoodTaxStrategyFactory();
10 | $factoryMethod3 = new FactoryMethod\TaxFreeStrategyFactory();
11 | 
12 | $product = new Product();
13 | $product->setName("Test Product")
14 |     ->setCategory("Test Category")
15 |     ->setPrice(100);
16 | 
17 | lns();ln();
18 | echo $factoryMethod1->make()->calculate($product);
19 | ln();
20 | echo $factoryMethod2->make()->calculate($product);
21 | ln();
22 | echo $factoryMethod3->make()->calculate($product);
23 | ln();
24 | lns();


--------------------------------------------------------------------------------
/example/flyweight.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Flyweight\CarStoreFlyweight;
 4 | use App\Flyweight\Component\Car;
 5 | use App\Flyweight\Component\ColorEnum;
 6 | 
 7 | require_once 'autoloader.php';
 8 | 
 9 | $carStore = new CarStoreFlyweight;
10 | 
11 | $chevette1 = new Car(
12 |     'ABC123',
13 |     $carStore->getCharacteristics('Chevrolet', 'Chevette', ColorEnum::BLUE)
14 | );
15 | 
16 | $chevette2 = new Car(
17 |     'XYZ123',
18 |     $carStore->getCharacteristics('Chevrolet', 'Chevette', ColorEnum::BLUE)
19 | );
20 | 
21 | if ($chevette1->getCharacteristic() === $chevette2->getCharacteristic()) {
22 |     dump('$chevette1->getCharacteristics() is literally the same object as $chevette2->getCharacteristics()');
23 | }


--------------------------------------------------------------------------------
/example/interpreter.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Interpreter\Component\BlogPostRepository;
 4 | use App\Interpreter\SearchQueryInterpreter;
 5 | 
 6 | require_once 'autoloader.php';
 7 | 
 8 | $blogPostRepository = new BlogPostRepository();
 9 | $interpreter = new SearchQueryInterpreter($blogPostRepository);
10 | 
11 | ln();
12 | lns();
13 | ln();
14 | echo "Search by title: 'My Blog Post'";
15 | ln();
16 | 
17 | $posts = $interpreter->interpret('title:My Blog Post');
18 | // $posts now contains an array of BlogPost objects with the title 'My Blog Post'
19 | foreach ($posts as $post) {
20 |     echo $post;
21 |     ln();
22 | }
23 | 
24 | lns();
25 | ln();
26 | echo "Search by author: 'John Doe'";
27 | ln();
28 | 
29 | $posts = $interpreter->interpret('author:John Doe');
30 | // $posts now contains an array of BlogPost objects written by 'John Doe'
31 | foreach ($posts as $post) {
32 |     echo $post;
33 |     ln();
34 | }
35 | 
36 | lns();
37 | ln();
38 | echo "Search by date: '2023-07-01'";
39 | ln();
40 | 
41 | $posts = $interpreter->interpret('date:2023-07-01');
42 | // $posts now contains an array of BlogPost objects published on 2023-07-01
43 | foreach ($posts as $post) {
44 |     echo $post;
45 |     ln();
46 | }
47 | 


--------------------------------------------------------------------------------
/example/iterator.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Iterator;
 4 | 
 5 | require_once 'autoloader.php';
 6 | 
 7 | $userCollection = new Iterator\UserColletion();
 8 | $userCollection->addUser('Gabriel')
 9 |     ->addUser('Alice')
10 |     ->addUser('Braian')
11 |     ->addUser('George')
12 |     ->addUser('Lucy');
13 | 
14 | lns();
15 | ln();
16 | echo '------- Regular traversal -------';
17 | ln();
18 | foreach ($userCollection->getIterator() as $user) {
19 |     echo $user;
20 |     ln();
21 | }
22 | 
23 | lns();
24 | ln();
25 | 
26 | echo '------- Reverse traversal -------';
27 | ln();
28 | foreach ($userCollection->getReverseIterator() as $user) {
29 |     echo $user;
30 |     ln();
31 | }


--------------------------------------------------------------------------------
/example/mediator.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Mediator\ChatRoom;
 4 | use App\Mediator\User;
 5 | 
 6 | require_once 'autoloader.php';
 7 | 
 8 | $mediator = new ChatRoom();
 9 | 
10 | $john = new User('John Doe', $mediator);
11 | $jane = new User('Jane Doe', $mediator);
12 | 
13 | lns();ln();
14 | $john->send('Hi there!');
15 | ln();
16 | $jane->send('Hey!');


--------------------------------------------------------------------------------
/example/memento.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use \App\Memento;
 4 | 
 5 | require_once 'autoloader.php';
 6 | 
 7 | $textEditor = new Memento\TextEditor;
 8 | $textEditor->setText('VERSION 1');
 9 | 
10 | $caretaker = new Memento\Caretaker($textEditor);
11 | $caretaker->backup();
12 | 
13 | sleep(1);
14 | $textEditor->setText('VERSION 2');
15 | $caretaker->backup();
16 | 
17 | sleep(1);
18 | $textEditor->setText('VERSION 3');
19 | 
20 | dump([
21 |     'LAST TEXT SNAPSHOT' => $textEditor->getText(),
22 |     'LAST SNAPSHOT CREATED AT' => $caretaker->getLastSnapshotDate() ? $caretaker->getLastSnapshotDate()->format('Y-m-d H:i:s') : null
23 | ]);
24 | 
25 | $lastSnapshotDate = $caretaker->getLastSnapshotDate() ? $caretaker->getLastSnapshotDate()->format('Y-m-d H:i:s') : null;
26 | $caretaker->undo();
27 | dump([
28 |     'LAST TEXT SNAPSHOT' => $textEditor->getText(),
29 |     'LAST SNAPSHOT CREATED AT' => $lastSnapshotDate
30 | ]);
31 | 
32 | $lastSnapshotDate = $caretaker->getLastSnapshotDate() ? $caretaker->getLastSnapshotDate()->format('Y-m-d H:i:s') : null;
33 | $caretaker->undo();
34 | dump([
35 |     'LAST TEXT SNAPSHOT' => $textEditor->getText(),
36 |     'LAST SNAPSHOT CREATED AT' => $lastSnapshotDate
37 | ]);
38 | 


--------------------------------------------------------------------------------
/example/money.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Money\Currency;
 4 | use App\Money\Money;
 5 | 
 6 | require_once 'autoloader.php';
 7 | 
 8 | $firstAmount = new Money(120, Currency::EUR());
 9 | $secondAmount = new Money(150, Currency::EUR());
10 | 
11 | $isEqualTo = $firstAmount->isEqualTo($secondAmount) ? 'YES' : 'NO';
12 | $isGreaterThan = $firstAmount->isGreaterThan($secondAmount) ? 'YES' : 'NO';
13 | $isLowerThan = $firstAmount->isLowerThan($secondAmount) ? 'YES' : 'NO';
14 | 
15 | lns();ln();
16 | echo '$firstAmount->isEqualTo(): ' . $isEqualTo . " ({$firstAmount} === {$secondAmount})";
17 | ln();
18 | echo '$firstAmount->isGreaterThan(): ' . $isGreaterThan . " ({$firstAmount} > {$secondAmount})";
19 | ln();
20 | echo '$firstAmount->isLowerThan(): ' . $isLowerThan . " ({$firstAmount} < {$secondAmount})";
21 | ln();
22 | 


--------------------------------------------------------------------------------
/example/null_object.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\NullObject\Component\EventDispatcher;
 4 | use App\NullObject\Component\NullEventDispatcher;
 5 | use App\NullObject\InvoiceCreatedEvent;
 6 | 
 7 | require_once 'autoloader.php';
 8 | 
 9 | $eventDispatcher = new EventDispatcher;
10 | $nullEventDispatcher = new NullEventDispatcher;
11 | 
12 | $invoiceCreatedEvent = new InvoiceCreatedEvent($eventDispatcher);
13 | $invoiceCreatedEvent->dispatch();
14 | 
15 | $invoiceCreatedEventNullObject = new InvoiceCreatedEvent($nullEventDispatcher);
16 | $invoiceCreatedEventNullObject->dispatch();
17 | $invoiceCreatedEventNullObject->dispatch();
18 | 


--------------------------------------------------------------------------------
/example/object_pool.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\ObjectPool\DatabaseConnectionPool;
 4 | 
 5 | require_once 'autoloader.php';
 6 | 
 7 | $pool = new DatabaseConnectionPool();
 8 | 
 9 | // Get a connection from the pool and use it
10 | $connection = $pool->get();
11 | $connection->query("SELECT * FROM users");
12 | $pool->release($connection);


--------------------------------------------------------------------------------
/example/observer.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Observer\Component\Invoice;
 4 | use App\Observer\Component\InvoiceEventType;
 5 | use App\Observer\EmailAlertListener;
 6 | use App\Observer\InvoiceEventManager;
 7 | use App\Observer\PushNotificationListener;
 8 | 
 9 | require_once 'autoloader.php';
10 | 
11 | lns();
12 | ln();
13 | $emailAlertListener = new EmailAlertListener();
14 | $pushNotificationListener = new PushNotificationListener();
15 | 
16 | $invoiceEventManager = new InvoiceEventManager();
17 | 
18 | // Register the subscribers
19 | $invoiceEventManager->subscribe(InvoiceEventType::CREATED, $emailAlertListener);
20 | $invoiceEventManager->subscribe(InvoiceEventType::APPROVED, $emailAlertListener);
21 | $invoiceEventManager->subscribe(InvoiceEventType::CANCELED, $emailAlertListener);
22 | ln();
23 | $invoiceEventManager->subscribe(InvoiceEventType::APPROVED, $pushNotificationListener);
24 | $invoiceEventManager->subscribe(InvoiceEventType::CANCELED, $pushNotificationListener);
25 | lns();
26 | ln();
27 | // -------------------------
28 | 
29 | $invoice = new Invoice(
30 |     1234,
31 |     100.55,
32 |     InvoiceEventType::CREATED->name,
33 |     'gabriel@anhaia.com'
34 | );
35 | 
36 | $invoiceEventManager->notifySubscribers( InvoiceEventType::CREATED, $invoice, ['created_at' => new \DateTime()]);
37 | ln();
38 | $invoice->setState(InvoiceEventType::APPROVED->name);
39 | $invoiceEventManager->notifySubscribers( InvoiceEventType::APPROVED, $invoice, ['approved_at' => new \DateTime()]);
40 | ln();
41 | $invoice->setState(InvoiceEventType::CANCELED->name);
42 | $invoiceEventManager->notifySubscribers( InvoiceEventType::CANCELED, $invoice, ['canceled_at' => new \DateTime()]);


--------------------------------------------------------------------------------
/example/prototype.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use \App\Prototype;
 4 | 
 5 | require_once 'autoloader.php';
 6 | 
 7 | $bookA = new Prototype\BookA();
 8 | $bookA->setAuthorName('Gabriel Anhaia')
 9 |     ->setSubject('Technology');
10 | 
11 | $books = [];
12 | for ($x = 0; $x < 10; $x++) {
13 |     $books = clone $bookA;
14 | }
15 | 
16 | $bookB = new Prototype\BookB();
17 | $bookB->setAuthorName('Gabriel Anhaia')
18 |     ->setSubject('Technology');
19 | 
20 | for ($x = 0; $x < 10; $x++) {
21 |     $books = clone $bookB;
22 | }


--------------------------------------------------------------------------------
/example/proxy.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Proxy\GoogleMapsIntegration;
 4 | use App\Proxy\GoogleMapsIntegrationProxy;
 5 | 
 6 | require_once 'autoloader.php';
 7 | 
 8 | lns();
 9 | ln();
10 | $googleMapsIntegrationOriginalClass = new GoogleMapsIntegration();
11 | $address = $googleMapsIntegrationOriginalClass->getAddressByCoordinates(1234, 5678);
12 | dump($address);
13 | 
14 | $googleMapsIntegrationProxy = new GoogleMapsIntegrationProxy($googleMapsIntegrationOriginalClass);
15 | $addressFromProxy = $googleMapsIntegrationProxy->getAddressByCoordinates(1234, 5678);
16 | dump($addressFromProxy);
17 | 
18 | /**
19 |     Note: The Proxy pattern is much more powerful.
20 |     You can even use the proxy to manage a Cache layer between the original class, or even add extra validations in this middle layer.
21 | */


--------------------------------------------------------------------------------
/example/singleton.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\{Singleton};
 4 | 
 5 | require_once 'autoloader.php';
 6 | 
 7 | $dbConnectionInstance1 = Singleton\DBConnectionSingleton::getConnection();
 8 | $dbConnectionInstance2 = Singleton\DBConnectionSingleton::getConnection();
 9 | 
10 | echo $dbConnectionInstance1->doSomething();
11 | ln();
12 | echo $dbConnectionInstance2->doSomething();
13 | ln();
14 | 
15 | if (spl_object_id($dbConnectionInstance1) === spl_object_id($dbConnectionInstance2)) {
16 |     dump('Object "$dbConnectionInstance1" and "$dbConnectionInstance2" are exactly the same in memory.');
17 | }


--------------------------------------------------------------------------------
/example/state.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use \App\State;
 4 | 
 5 | require_once 'autoloader.php';
 6 | 
 7 | ln();lns();ln();
 8 | $invoiceContext = new State\InvoiceContext(new State\StateInvoicePending());
 9 | $invoiceContext->doSomething2();
10 | $invoiceContext->doSomething1();
11 | 
12 | lns();ln();
13 | 
14 | $invoiceContext->doSomething2();
15 | $invoiceContext->doSomething1();
16 | 
17 | lns();ln();
18 | 
19 | $invoiceContext->doSomething1();
20 | $invoiceContext->doSomething2();
21 | 
22 | lns();ln();
23 | 
24 | $invoiceContext->doSomething1();
25 | $invoiceContext->doSomething2();
26 | 


--------------------------------------------------------------------------------
/example/strategy.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Strategy\FoodTaxStrategy;
 4 | use App\Strategy\Component\Product;
 5 | use App\Strategy\Context;
 6 | use App\Strategy\TaxFreeStrategy;
 7 | use App\Strategy\ElectronicTaxStrategy;
 8 | 
 9 | require_once 'autoloader.php';
10 | 
11 | $product = new Product;
12 | $product->setName('Product Test')
13 |     ->setCategory('electronics')
14 |     ->setPrice(100);
15 | 
16 | switch ($product->getCategory()) {
17 |     case 'electronics':
18 |         $strategy = new ElectronicTaxStrategy;
19 |         break;
20 |     case 'food':
21 |         $strategy = new FoodTaxStrategy;
22 |         break;
23 |     case 'books':
24 |         $strategy = new TaxFreeStrategy;
25 |         break;
26 |     default:
27 |         throw new \Exception('Strategy not found for this category.');
28 | }
29 | 
30 | $context = new Context($strategy);
31 | $context->calculateProduct($product);
32 | 
33 | lns();ln();
34 | echo 'Product name: ' . $product->getName();
35 | ln();
36 | echo 'Product price: ' . $product->getPrice();
37 | ln();
38 | echo 'Total taxes: ' . $product->getTaxes();
39 | 


--------------------------------------------------------------------------------
/example/template_method.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\TemplateMethod\Component\StudentDto;
 4 | use App\TemplateMethod\DevCertificateGenerator;
 5 | use App\TemplateMethod\MarketingCertificateGenerator;
 6 | use App\TemplateMethod\PhotoCertificateGenerator;
 7 | 
 8 | require_once 'autoloader.php';
 9 | 
10 | $coursesAvailable = [
11 |     'php_8' => 'Building Applications with PHP 8',
12 |     'social_media_marketing' => 'Social Media Marketing',
13 |     'photo_masterclass' => 'Photography Masterclass'
14 | ];
15 | 
16 | $student = new StudentDto(
17 |     'Gabriel Anhaia',
18 |     $coursesAvailable['php_8'],
19 |     new \DateTimeImmutable(),
20 |     'gabriel@anhaia.com',
21 |     123456789
22 | );
23 | 
24 | // A Factory can be implemented here, but this is not the purpose of this example.
25 | switch ($student->getCourseName()) {
26 |     case $coursesAvailable['php_8']:
27 |         $template = new DevCertificateGenerator;
28 |         break;
29 |     case $coursesAvailable['social_media_marketing']:
30 |         $template = new MarketingCertificateGenerator;
31 |         break;
32 |     case $coursesAvailable['photo_masterclass']:
33 |         $template = new PhotoCertificateGenerator;
34 |         break;
35 |     default:
36 |         throw new \Exception('Course does not have a template for Certificate flow.');
37 | }
38 | 
39 | $template->processCertificateFlow($student);


--------------------------------------------------------------------------------
/example/visitor.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | use App\Visitor\AdminUser;
 4 | use App\Visitor\CanEditVisitor;
 5 | use App\Visitor\EditorUser;
 6 | use App\Visitor\ViewerUser;
 7 | 
 8 | require_once 'autoloader.php';
 9 | 
10 | $user1 = new AdminUser();
11 | $canEditVisitor = new CanEditVisitor();
12 | 
13 | lns();ln();
14 | if ($user1->accept($canEditVisitor)) {
15 |     echo 'User 1 can edit';
16 | } else {
17 |     echo 'User 1 cannot edit';
18 | }
19 | 
20 | ln();lns();ln();
21 | $user2 = new EditorUser();
22 | if ($user2->accept($canEditVisitor)) {
23 |     echo 'User 2 can edit';
24 | } else {
25 |     echo 'User 2 cannot edit';
26 | }
27 | 
28 | ln();lns();ln();
29 | $user3 = new ViewerUser();
30 | if ($user3->accept($canEditVisitor)) {
31 |     echo 'User 3 can edit';
32 | } else {
33 |     echo 'User 3 cannot edit';
34 | }
35 | ln();lns();


--------------------------------------------------------------------------------
/logo.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/gabrielanhaia/php-design-patterns/0e3556f05a5e731f4937439fd8b84ff9fba056cd/logo.png


--------------------------------------------------------------------------------
/src/AbstractFactory/AmericanOrderFactory.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\AbstractFactory;
 4 | 
 5 | use App\AbstractFactory\Product\CarrierCompanyInterface;
 6 | use App\AbstractFactory\Product\FedexCarrier;
 7 | use App\AbstractFactory\Product\PaymentGatewayInterface;
 8 | use App\AbstractFactory\Product\PaypalPaymentGateway;
 9 | 
10 | class AmericanOrderFactory extends OrderManagementAbstractFactory
11 | {
12 |     public function createPaymentGateway(): PaymentGatewayInterface
13 |     {
14 |         return new PaypalPaymentGateway();
15 |     }
16 | 
17 |     public function createCarrierCompany(): CarrierCompanyInterface
18 |     {
19 |         return new FedexCarrier();
20 |     }
21 | }


--------------------------------------------------------------------------------
/src/AbstractFactory/GermanOrderFactory.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\AbstractFactory;
 4 | 
 5 | use App\AbstractFactory\Product\CarrierCompanyInterface;
 6 | use App\AbstractFactory\Product\DHLCarrier;
 7 | use App\AbstractFactory\Product\PaymentGatewayInterface;
 8 | use App\AbstractFactory\Product\StripePaymentGateway;
 9 | 
10 | class GermanOrderFactory extends OrderManagementAbstractFactory
11 | {
12 |     public function createPaymentGateway(): PaymentGatewayInterface
13 |     {
14 |         return new StripePaymentGateway();
15 |     }
16 | 
17 |     public function createCarrierCompany(): CarrierCompanyInterface
18 |     {
19 |         return new DHLCarrier();
20 |     }
21 | }


--------------------------------------------------------------------------------
/src/AbstractFactory/OrderManagementAbstractFactory.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\AbstractFactory;
 4 | 
 5 | use App\AbstractFactory\Product\CarrierCompanyInterface;
 6 | use App\AbstractFactory\Product\PaymentGatewayInterface;
 7 | 
 8 | abstract class OrderManagementAbstractFactory
 9 | {
10 |     public abstract function createPaymentGateway(): PaymentGatewayInterface;
11 | 
12 |     public abstract function createCarrierCompany(): CarrierCompanyInterface;
13 | }


--------------------------------------------------------------------------------
/src/AbstractFactory/Product/CarrierCompanyInterface.php:
--------------------------------------------------------------------------------
1 | <?php
2 | 
3 | namespace App\AbstractFactory\Product;
4 | 
5 | interface CarrierCompanyInterface
6 | {
7 |     public function ship(string $data);
8 | }


--------------------------------------------------------------------------------
/src/AbstractFactory/Product/DHLCarrier.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\AbstractFactory\Product;
 4 | 
 5 | class DHLCarrier implements CarrierCompanyInterface
 6 | {
 7 |     public function ship(string $data)
 8 |     {
 9 |         echo "Package `{$data}` shipped by DHL";
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/AbstractFactory/Product/FedexCarrier.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\AbstractFactory\Product;
 4 | 
 5 | class FedexCarrier implements CarrierCompanyInterface
 6 | {
 7 |     public function ship(string $data)
 8 |     {
 9 |         echo "Package `{$data}` shipped by Fedex";
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/AbstractFactory/Product/PaymentGatewayInterface.php:
--------------------------------------------------------------------------------
1 | <?php
2 | 
3 | namespace App\AbstractFactory\Product;
4 | 
5 | interface PaymentGatewayInterface
6 | {
7 |     public function pay(string $data);
8 | }


--------------------------------------------------------------------------------
/src/AbstractFactory/Product/PaypalPaymentGateway.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\AbstractFactory\Product;
 4 | 
 5 | class PaypalPaymentGateway implements PaymentGatewayInterface
 6 | {
 7 |     public function pay(string $data)
 8 |     {
 9 |         echo "Order `{$data}` paid through Paypal";
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/AbstractFactory/Product/StripePaymentGateway.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\AbstractFactory\Product;
 4 | 
 5 | class StripePaymentGateway implements PaymentGatewayInterface
 6 | {
 7 |     public function pay(string $data)
 8 |     {
 9 |         echo "Order `{$data}` paid through Stripe";
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/Adapter/Component/UserScore.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Adapter\Component;
 6 | 
 7 | /**
 8 |  * Class User
 9 |  * @package App\Adapter\Component
10 |  */
11 | class UserScore
12 | {
13 |     private string $uuid;
14 |     private string $name;
15 |     private float $score;
16 | 
17 |     public function __construct(string $uuid, string $name, float $score)
18 |     {
19 |         $this->uuid = $uuid;
20 |         $this->name = $name;
21 |         $this->score = $score;
22 |     }
23 | 
24 |     /**
25 |      * @param string $uuid
26 |      * @return UserScore
27 |      */
28 |     public function setUuid(string $uuid): UserScore
29 |     {
30 |         $this->uuid = $uuid;
31 |         return $this;
32 |     }
33 | 
34 |     /**
35 |      * @param string $name
36 |      * @return UserScore
37 |      */
38 |     public function setName(string $name): UserScore
39 |     {
40 |         $this->name = $name;
41 |         return $this;
42 |     }
43 | 
44 |     /**
45 |      * @return string
46 |      */
47 |     public function getUuid(): string
48 |     {
49 |         return $this->uuid;
50 |     }
51 | 
52 |     /**
53 |      * @return string
54 |      */
55 |     public function getName(): string
56 |     {
57 |         return $this->name;
58 |     }
59 | 
60 |     /**
61 |      * @return float
62 |      */
63 |     public function getScore(): float
64 |     {
65 |         return $this->score;
66 |     }
67 | 
68 |     /**
69 |      * @param float $score
70 |      * @return UserScore
71 |      */
72 |     public function setScore(float $score): UserScore
73 |     {
74 |         $this->score = $score;
75 |         return $this;
76 |     }
77 | }


--------------------------------------------------------------------------------
/src/Adapter/OldIntegration.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Adapter;
 4 | 
 5 | /**
 6 |  * Class OldIntegration
 7 |  * @package App\Adapter\Component
 8 |  *
 9 |  * This class is the "Adaptee" of our pattern.
10 |  */
11 | class OldIntegration
12 | {
13 |     const WSDL_URL = 'http://score-application.com.test/people_score.wsdl';
14 | 
15 |     /**
16 |      * This method is just an example. It doesn't work. It's just to show how it would look like.
17 |      * That is why there are code commented, and the return is always the same.
18 |      *
19 |      * Here should be a lot of code that uses the PHP \SOAP client to call the external API.
20 |      */
21 |     public function getScore($uuid)
22 |     {
23 |         //$soapClient = new \SoapClient(self::WSDL_URL, [
24 |             //'exceptions' => true
25 |         //]);
26 | 
27 |         //$requestData = ['user_uuid' => $uuid];
28 | 
29 |         //$response = $soapClient->GetScore($requestData);
30 | 
31 |         $response = [
32 |             'uuid' => '7de2a62e-7628-4d2f-a02b-fe395c5ce85b',
33 |             'name' => 'Gabriel Anhaia',
34 |             'score' => 65.2
35 |         ];
36 | 
37 |         return $response;
38 |     }
39 | }


--------------------------------------------------------------------------------
/src/Adapter/ScoreIntegrationAdapter.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Adapter;
 6 | 
 7 | use App\Adapter\Component\UserScore;
 8 | 
 9 | /**
10 |  * Class IntegrationAdapter
11 |  * @package App\Adapter
12 |  */
13 | class ScoreIntegrationAdapter implements ScoreIntegrationTarget
14 | {
15 |     /**
16 |      * @var OldIntegration
17 |      */
18 |     private OldIntegration $oldIntegration;
19 | 
20 |     public function __construct(OldIntegration $oldIntegration)
21 |     {
22 |         $this->oldIntegration = $oldIntegration;
23 |     }
24 | 
25 |     /**
26 |      * @param string $uuid
27 |      * @return UserScore
28 |      */
29 |     public function getUserScore(string $uuid): UserScore
30 |     {
31 |         $rawUser = $this->oldIntegration->getScore($uuid);
32 | 
33 |         $formattedUser = new UserScore(
34 |             $rawUser['uuid'],
35 |             $rawUser['name'],
36 |             $rawUser['score']
37 |         );
38 | 
39 |         return $formattedUser;
40 |     }
41 | }


--------------------------------------------------------------------------------
/src/Adapter/ScoreIntegrationTarget.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Adapter;
 6 | 
 7 | use App\Adapter\Component\UserScore;
 8 | 
 9 | /**
10 |  * Interface ScoreIntegrationTarget
11 |  * @package App\Adapter
12 |  */
13 | interface ScoreIntegrationTarget
14 | {
15 |     public function getUserScore(string $uuid): UserScore;
16 | }


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/src/Bridge/AboutPage.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Bridge;
 4 | 
 5 | class AboutPage extends WebPage
 6 | {
 7 |     public function getContent(): string
 8 |     {
 9 |         return "About page in " . $this->theme->getColor();
10 |     }
11 | }


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/src/Bridge/DarkTheme.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Bridge;
 4 | 
 5 | class DarkTheme implements Theme
 6 | {
 7 |     public function getColor(): string
 8 |     {
 9 |         return 'Dark Black';
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/Bridge/HomePage.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Bridge;
 4 | 
 5 | class HomePage extends WebPage
 6 | {
 7 |     public function getContent(): string
 8 |     {
 9 |         return "Home page in " . $this->theme->getColor();
10 |     }
11 | }


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/src/Bridge/LightTheme.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Bridge;
 4 | 
 5 | class LightTheme implements Theme
 6 | {
 7 |     public function getColor(): string
 8 |     {
 9 |         return 'Off White';
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/Bridge/Theme.php:
--------------------------------------------------------------------------------
1 | <?php
2 | 
3 | namespace App\Bridge;
4 | 
5 | interface Theme
6 | {
7 |     public function getColor(): string;
8 | }


--------------------------------------------------------------------------------
/src/Bridge/WebPage.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Bridge;
 4 | 
 5 | abstract class WebPage
 6 | {
 7 |     protected Theme $theme;
 8 | 
 9 |     public function __construct(Theme $theme)
10 |     {
11 |         $this->theme = $theme;
12 |     }
13 | 
14 |     abstract public function getContent(): string;
15 | }


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/src/Builder/AbstractPaymentMethodBuilder.php:
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 1 | <?php
 2 | 
 3 | namespace App\Builder;
 4 | 
 5 | use App\Builder\Product\PaymentMethod;
 6 | 
 7 | abstract class AbstractPaymentMethodBuilder
 8 | {
 9 |     protected PaymentMethod $paymentMethod;
10 | 
11 |     public function __construct()
12 |     {
13 |         $this->reset();
14 |     }
15 | 
16 |     public function reset()
17 |     {
18 |         $this->paymentMethod = new PaymentMethod();
19 |     }
20 | 
21 |     public function getPaymentMethod(): PaymentMethod
22 |     {
23 |         return $this->paymentMethod;
24 |     }
25 | 
26 |     public abstract function buildPaymentMethodType(): AbstractPaymentMethodBuilder;
27 | 
28 |     public abstract function buildMaxInstalments(): AbstractPaymentMethodBuilder;
29 | 
30 |     public abstract function buildFeePercentageOverInstalments(): AbstractPaymentMethodBuilder;
31 | 
32 |     public abstract function buildPercentageDiscount(): AbstractPaymentMethodBuilder;
33 | 
34 |     public abstract function buildIsCardAllowed(): AbstractPaymentMethodBuilder;
35 | 
36 |     public abstract function buildIsSepaMandateAllowed(): AbstractPaymentMethodBuilder;
37 | 
38 |     public abstract function buildLimitDaysRefund(): AbstractPaymentMethodBuilder;
39 | }


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/src/Builder/DirectDebitPaymentMethodBuilder.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Builder;
 4 | 
 5 | use App\Builder\Product\TypeEnum;
 6 | 
 7 | class DirectDebitPaymentMethodBuilder extends AbstractPaymentMethodBuilder
 8 | {
 9 |     public function buildPaymentMethodType(): AbstractPaymentMethodBuilder
10 |     {
11 |         $this->paymentMethod->setPaymentMethodType(TypeEnum::DEBIT);
12 |         return $this;
13 |     }
14 | 
15 |     public function buildMaxInstalments(): AbstractPaymentMethodBuilder
16 |     {
17 |         $this->paymentMethod->setMaxInstalments(6);
18 |         return $this;
19 |     }
20 | 
21 |     public function buildFeePercentageOverInstalments(): AbstractPaymentMethodBuilder
22 |     {
23 |         $this->paymentMethod->setPercentageDiscount(12.5);
24 |         return $this;
25 |     }
26 | 
27 |     public function buildPercentageDiscount(): AbstractPaymentMethodBuilder
28 |     {
29 |         $this->paymentMethod->setPercentageDiscount(5.0);
30 |         return $this;
31 |     }
32 | 
33 |     public function buildIsCardAllowed(): AbstractPaymentMethodBuilder
34 |     {
35 |         $this->paymentMethod->setIsCardAllowed(true);
36 |         return $this;
37 |     }
38 | 
39 |     public function buildIsSepaMandateAllowed(): AbstractPaymentMethodBuilder
40 |     {
41 |         $this->paymentMethod->setIsSepaMandateAllowed(true);
42 |         return $this;
43 |     }
44 | 
45 |     public function buildLimitDaysRefund(): AbstractPaymentMethodBuilder
46 |     {
47 |         $this->paymentMethod->setLimitDaysRefund(30);
48 |         return $this;
49 |     }
50 | }


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/src/Builder/PaymentMethodDirector.php:
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 1 | <?php
 2 | 
 3 | namespace App\Builder;
 4 | 
 5 | use App\Builder\Product\PaymentMethod;
 6 | 
 7 | class PaymentMethodDirector
 8 | {
 9 |     private AbstractPaymentMethodBuilder $builder;
10 | 
11 |     public function __construct(AbstractPaymentMethodBuilder $builder)
12 |     {
13 |         $this->builder = $builder;
14 |     }
15 | 
16 |     public function changeBuilder(AbstractPaymentMethodBuilder $builder): void
17 |     {
18 |         $this->builder = $builder;
19 |     }
20 | 
21 |     public function buildPaymentMethod(): PaymentMethod
22 |     {
23 |         $this->builder->buildPaymentMethodType()
24 |             ->buildMaxInstalments()
25 |             ->buildFeePercentageOverInstalments()
26 |             ->buildPercentageDiscount()
27 |             ->buildIsCardAllowed()
28 |             ->buildIsSepaMandateAllowed()
29 |             ->buildLimitDaysRefund();
30 | 
31 |         return $this->builder->getPaymentMethod();
32 |     }
33 | }


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/src/Builder/Product/PaymentMethod.php:
--------------------------------------------------------------------------------
  1 | <?php
  2 | 
  3 | namespace App\Builder\Product;
  4 | 
  5 | class PaymentMethod
  6 | {
  7 |     private TypeEnum $paymentMethodType;
  8 | 
  9 |     private int $maxInstalments;
 10 | 
 11 |     private float $feePercentageOverInstalments;
 12 | 
 13 |     private float $percentageDiscount;
 14 | 
 15 |     private bool $isCardAllowed;
 16 | 
 17 |     private bool $isSepaMandateAllowed;
 18 | 
 19 |     private int $limitDaysRefund;
 20 | 
 21 |     /**
 22 |      * @return TypeEnum
 23 |      */
 24 |     public function getPaymentMethodType(): TypeEnum
 25 |     {
 26 |         return $this->paymentMethodType;
 27 |     }
 28 | 
 29 |     /**
 30 |      * @param TypeEnum $paymentMethodType
 31 |      */
 32 |     public function setPaymentMethodType(TypeEnum $paymentMethodType): void
 33 |     {
 34 |         $this->paymentMethodType = $paymentMethodType;
 35 |     }
 36 | 
 37 |     /**
 38 |      * @return int
 39 |      */
 40 |     public function getMaxInstalments(): int
 41 |     {
 42 |         return $this->maxInstalments;
 43 |     }
 44 | 
 45 |     /**
 46 |      * @param int $maxInstalments
 47 |      */
 48 |     public function setMaxInstalments(int $maxInstalments): void
 49 |     {
 50 |         $this->maxInstalments = $maxInstalments;
 51 |     }
 52 | 
 53 |     /**
 54 |      * @return float
 55 |      */
 56 |     public function getFeePercentageOverInstalments(): float
 57 |     {
 58 |         return $this->feePercentageOverInstalments;
 59 |     }
 60 | 
 61 |     /**
 62 |      * @param float $feePercentageOverInstalments
 63 |      */
 64 |     public function setFeePercentageOverInstalments(float $feePercentageOverInstalments): void
 65 |     {
 66 |         $this->feePercentageOverInstalments = $feePercentageOverInstalments;
 67 |     }
 68 | 
 69 |     /**
 70 |      * @return float
 71 |      */
 72 |     public function getPercentageDiscount(): float
 73 |     {
 74 |         return $this->percentageDiscount;
 75 |     }
 76 | 
 77 |     /**
 78 |      * @param float $percentageDiscount
 79 |      */
 80 |     public function setPercentageDiscount(float $percentageDiscount): void
 81 |     {
 82 |         $this->percentageDiscount = $percentageDiscount;
 83 |     }
 84 | 
 85 |     /**
 86 |      * @return bool
 87 |      */
 88 |     public function isCardAllowed(): bool
 89 |     {
 90 |         return $this->isCardAllowed;
 91 |     }
 92 | 
 93 |     /**
 94 |      * @param bool $isCardAllowed
 95 |      */
 96 |     public function setIsCardAllowed(bool $isCardAllowed): void
 97 |     {
 98 |         $this->isCardAllowed = $isCardAllowed;
 99 |     }
100 | 
101 |     /**
102 |      * @return bool
103 |      */
104 |     public function isSepaMandateAllowed(): bool
105 |     {
106 |         return $this->isSepaMandateAllowed;
107 |     }
108 | 
109 |     /**
110 |      * @param bool $isSepaMandateAllowed
111 |      */
112 |     public function setIsSepaMandateAllowed(bool $isSepaMandateAllowed): void
113 |     {
114 |         $this->isSepaMandateAllowed = $isSepaMandateAllowed;
115 |     }
116 | 
117 |     /**
118 |      * @return int
119 |      */
120 |     public function getLimitDaysRefund(): int
121 |     {
122 |         return $this->limitDaysRefund;
123 |     }
124 | 
125 |     /**
126 |      * @param int $limitDaysRefund
127 |      */
128 |     public function setLimitDaysRefund(int $limitDaysRefund): void
129 |     {
130 |         $this->limitDaysRefund = $limitDaysRefund;
131 |     }
132 | }


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/src/Builder/Product/TypeEnum.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Builder\Product;
 4 | 
 5 | enum TypeEnum
 6 | {
 7 |     case CREDIT;
 8 | 
 9 |     case DEBIT;
10 | }


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/src/ChainOfResponsibility/AbstractLogger.php:
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 1 | <?php
 2 | 
 3 | namespace App\ChainOfResponsibility;
 4 | 
 5 | abstract class AbstractLogger implements Logger
 6 | {
 7 |     protected LogLevelEnum $level;
 8 |     protected ?Logger $nextLogger = null;
 9 | 
10 |     public function setNext(Logger $logger): Logger
11 |     {
12 |         $this->nextLogger = $logger;
13 |         return $logger;
14 |     }
15 | 
16 |     public function log(string $message, LogLevelEnum $level): void
17 |     {
18 |         if ($this->level->value <= $level->value) {
19 |             $this->writeLog($message);
20 |         }
21 |         if ($this->nextLogger !== null) {
22 |             $this->nextLogger->log($message, $level);
23 |         }
24 |     }
25 | 
26 |     abstract protected function writeLog(string $message): void;
27 | }


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/src/ChainOfResponsibility/ConsoleLogger.php:
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 1 | <?php
 2 | 
 3 | namespace App\ChainOfResponsibility;
 4 | 
 5 | class ConsoleLogger extends AbstractLogger
 6 | {
 7 |     public function __construct(LogLevelEnum $level)
 8 |     {
 9 |         $this->level = $level;
10 |     }
11 | 
12 |     protected function writeLog(string $message): void
13 |     {
14 |         echo "Console Logger: $message\n";
15 |     }
16 | }
17 | 


--------------------------------------------------------------------------------
/src/ChainOfResponsibility/ErrorLogger.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\ChainOfResponsibility;
 4 | 
 5 | class ErrorLogger extends AbstractLogger
 6 | {
 7 |     public function __construct(LogLevelEnum $level)
 8 |     {
 9 |         $this->level = $level;
10 |     }
11 | 
12 |     protected function writeLog(string $message): void
13 |     {
14 |         echo "Error Logger: $message\n";
15 |     }
16 | }


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/src/ChainOfResponsibility/FileLogger.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\ChainOfResponsibility;
 4 | 
 5 | class FileLogger extends AbstractLogger
 6 | {
 7 |     public function __construct(LogLevelEnum $level)
 8 |     {
 9 |         $this->level = $level;
10 |     }
11 | 
12 |     protected function writeLog(string $message): void
13 |     {
14 |         echo "File Logger: $message\n";
15 |     }
16 | }


--------------------------------------------------------------------------------
/src/ChainOfResponsibility/LogLevelEnum.php:
--------------------------------------------------------------------------------
1 | <?php
2 | 
3 | namespace App\ChainOfResponsibility;
4 | 
5 | enum LogLevelEnum: int {
6 |     case INFO = 1;
7 |     case ERROR = 2;
8 |     case DEBUG = 3;
9 | }


--------------------------------------------------------------------------------
/src/ChainOfResponsibility/Logger.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\ChainOfResponsibility;
 4 | 
 5 | interface Logger
 6 | {
 7 |     public function setNext(Logger $logger): Logger;
 8 | 
 9 |     public function log(string $message, LogLevelEnum $level): void;
10 | }


--------------------------------------------------------------------------------
/src/Command/AbstractPostCommand.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Command;
 4 | 
 5 | use App\Command\Component\Post;
 6 | 
 7 | abstract class AbstractPostCommand
 8 | {
 9 |     public function __construct(protected Post $post)
10 |     {
11 |     }
12 | 
13 |     abstract public function execute(): void;
14 | }


--------------------------------------------------------------------------------
/src/Command/Component/Post.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Command\Component;
 4 | 
 5 | class Post
 6 | {
 7 |     public function __construct(protected string $title, protected string $content)
 8 |     {
 9 |     }
10 | 
11 |     public function create(): void
12 |     {
13 |         // Logic for creating a post
14 |         echo "Post '{$this->title}' has been created.\n";
15 |     }
16 | 
17 |     public function update(string $newTitle, string $newContent): void
18 |     {
19 |         // Logic for updating a post
20 |         $this->title = $newTitle;
21 |         $this->content = $newContent;
22 |         echo "Post has been updated to '{$this->title}'.\n";
23 |     }
24 | 
25 |     public function delete(): void
26 |     {
27 |         // Logic for deleting a post
28 |         echo "Post '{$this->title}' has been deleted.\n";
29 |     }
30 | }


--------------------------------------------------------------------------------
/src/Command/CreatePostCommand.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Command;
 4 | 
 5 | class CreatePostCommand extends AbstractPostCommand
 6 | {
 7 |     public function execute(): void
 8 |     {
 9 |         $this->post->create();
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/Command/DeletePostCommand.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Command;
 4 | 
 5 | class DeletePostCommand extends AbstractPostCommand
 6 | {
 7 |     public function execute(): void
 8 |     {
 9 |         $this->post->delete();
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/Command/PostManager.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Command;
 4 | 
 5 | class PostManager
 6 | {
 7 |     private AbstractPostCommand $command;
 8 | 
 9 |     public function setCommand(AbstractPostCommand $command): void
10 |     {
11 |         $this->command = $command;
12 |     }
13 | 
14 |     public function executeCommand(): void
15 |     {
16 |         $this->command->execute();
17 |     }
18 | }


--------------------------------------------------------------------------------
/src/Command/UpdatePostCommand.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Command;
 4 | 
 5 | use App\Command\Component\Post;
 6 | 
 7 | class UpdatePostCommand extends AbstractPostCommand
 8 | {
 9 |     public function __construct(Post $post, protected string $newTitle, protected string $newContent)
10 |     {
11 |         parent::__construct($post);
12 |     }
13 | 
14 |     public function execute(): void
15 |     {
16 |         $this->post->update($this->newTitle, $this->newContent);
17 |     }
18 | }


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/src/Composite/Contact.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Composite;
 4 | 
 5 | class Contact extends MessengerComponent
 6 | {
 7 |     public function operation(): string
 8 |     {
 9 |         return "\tcontact:{$this->name}";
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/Composite/GroupComposite.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Composite;
 4 | 
 5 | class GroupComposite extends MessengerComponent
 6 | {
 7 |     protected \SplObjectStorage $children;
 8 | 
 9 |     public function __construct(string $name)
10 |     {
11 |         parent::__construct($name);
12 |         $this->children = new \SplObjectStorage();
13 |     }
14 | 
15 |     public function add(MessengerComponent $component): void
16 |     {
17 |         $this->children->attach($component);
18 |         $component->setParent($this);
19 |     }
20 | 
21 |     public function remove(MessengerComponent $component): void
22 |     {
23 |         $this->children->detach($component);
24 |         $component->setParent(null);
25 |     }
26 | 
27 |     public function isComposite(): bool
28 |     {
29 |         return true;
30 |     }
31 | 
32 |     public function operation(): string
33 |     {
34 |         $results = [];
35 |         foreach ($this->children as $child) {
36 |             $results[] = "\n\t" . $child->operation();
37 |         }
38 | 
39 |         return "MessageGroup:{$this->name}(" . "\t" . implode("+", $results) . "\n" . ")";
40 |     }
41 | }


--------------------------------------------------------------------------------
/src/Composite/MessengerComponent.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Composite;
 4 | 
 5 | abstract class MessengerComponent
 6 | {
 7 |     protected MessengerComponent $parent;
 8 | 
 9 |     protected string $name;
10 | 
11 |     public function __construct(string $name)
12 |     {
13 |         $this->name = $name;
14 |     }
15 | 
16 |     public function setParent(MessengerComponent $parent)
17 |     {
18 |         $this->parent = $parent;
19 |     }
20 | 
21 |     public function getParent(): MessengerComponent
22 |     {
23 |         return $this->parent;
24 |     }
25 | 
26 |     public function isComposite(): bool
27 |     {
28 |         return false;
29 |     }
30 | 
31 |     public function add(MessengerComponent $component): void
32 |     {
33 |         // Nothing happens by default.
34 |     }
35 | 
36 |     public function remove(MessengerComponent $component): void
37 |     {
38 |         // Nothing happens by default.
39 |     }
40 | 
41 |     public abstract function operation(): string;
42 | }


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/src/Decorator/Character.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Decorator;
 4 | 
 5 | abstract class Character
 6 | {
 7 |     protected string $name;
 8 | 
 9 |     protected int $totalStrength = 0;
10 | 
11 |     protected int $totalIntelligence = 0;
12 | 
13 |     protected int $totalAgility = 0;
14 | 
15 |     protected int $totalDexterity = 0;
16 | 
17 |     protected int $totalLuck = 0;
18 | 
19 |     public function getName(): string
20 |     {
21 |         return $this->name;
22 |     }
23 | 
24 |     public function getTotalStrength(): int
25 |     {
26 |         return $this->totalStrength;
27 |     }
28 | 
29 |     public function getTotalIntelligence(): int
30 |     {
31 |         return $this->totalIntelligence;
32 |     }
33 | 
34 |     public function getTotalAgility(): int
35 |     {
36 |         return $this->totalAgility;
37 |     }
38 | 
39 | 
40 |     public function getTotalDexterity(): int
41 |     {
42 |         return $this->totalDexterity;
43 |     }
44 | 
45 |     public function getTotalLuck(): int
46 |     {
47 |         return $this->totalLuck;
48 |     }
49 | }


--------------------------------------------------------------------------------
/src/Decorator/CharacterDecorator.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Decorator;
 4 | 
 5 | abstract class CharacterDecorator extends Character
 6 | {
 7 |     protected Character $character;
 8 | 
 9 |     public function __construct(Character $character)
10 |     {
11 |         $this->character = $character;
12 |     }
13 | 
14 |     public function getName(): string
15 |     {
16 |         return $this->character->getName();
17 |     }
18 | 
19 |     public function getTotalStrength(): int
20 |     {
21 |         return $this->character->getTotalStrength() + $this->totalStrength;
22 |     }
23 | 
24 |     public function getTotalIntelligence(): int
25 |     {
26 |         return $this->character->getTotalIntelligence() + $this->totalIntelligence;
27 |     }
28 |     public function getTotalAgility(): int
29 |     {
30 |         return $this->character->getTotalAgility() + $this->totalAgility;
31 |     }
32 |     public function getTotalDexterity(): int
33 |     {
34 |         return $this->character->getTotalDexterity() + $this->totalDexterity;
35 |     }
36 | 
37 |     public function getTotalLuck(): int
38 |     {
39 |         return $this->character->getTotalLuck() + $this->totalLuck;
40 |     }
41 | }


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/src/Decorator/Classes/Archer.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Decorator\Classes;
 4 | 
 5 | use App\Decorator\Character;
 6 | 
 7 | class Archer extends Character
 8 | {
 9 |     public function __construct()
10 |     {
11 |         $this->name = 'Archer';
12 |         $this->totalStrength = 10;
13 |         $this->totalAgility = 27;
14 |         $this->totalDexterity = 20;
15 |         $this->totalIntelligence = 15;
16 |         $this->totalLuck = 15;
17 |     }
18 | }


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/src/Decorator/Classes/Knight.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Decorator\Classes;
 4 | 
 5 | use App\Decorator\Character;
 6 | 
 7 | class Knight extends Character
 8 | {
 9 |     public function __construct()
10 |     {
11 |         $this->name = 'Knight';
12 |         $this->totalStrength = 26;
13 |         $this->totalAgility = 8;
14 |         $this->totalDexterity = 10;
15 |         $this->totalIntelligence = 10;
16 |         $this->totalLuck = 15;
17 |     }
18 | }


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/src/Decorator/Classes/Wizard.php:
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 1 | <?php
 2 | 
 3 | namespace App\Decorator\Classes;
 4 | 
 5 | use App\Decorator\Character;
 6 | 
 7 | class Wizard extends Character
 8 | {
 9 |     public function __construct()
10 |     {
11 |         $this->name = 'Wizard';
12 |         $this->totalStrength = 8;
13 |         $this->totalAgility = 15;
14 |         $this->totalDexterity = 16;
15 |         $this->totalIntelligence = 20;
16 |         $this->totalLuck = 25;
17 |     }
18 | }


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/src/Decorator/Items/GoblinRing.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Decorator\Items;
 4 | 
 5 | use App\Decorator\Character;
 6 | use App\Decorator\CharacterDecorator;
 7 | 
 8 | class GoblinRing extends CharacterDecorator
 9 | {
10 |     public function __construct(Character $character)
11 |     {
12 |         parent::__construct($character);
13 |         
14 |         $this->totalLuck = 8;
15 |     }
16 | }


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/src/Decorator/Items/HermesBoots.php:
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 1 | <?php
 2 | 
 3 | namespace App\Decorator\Items;
 4 | 
 5 | use App\Decorator\Character;
 6 | use App\Decorator\CharacterDecorator;
 7 | 
 8 | class HermesBoots extends CharacterDecorator
 9 | {
10 |     public function __construct(Character $character)
11 |     {
12 |         parent::__construct($character);
13 | 
14 |         $this->totalDexterity = 40;
15 |     }
16 | }


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/src/Decorator/Items/LighteningBoltOfZeus.php:
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 1 | <?php
 2 | 
 3 | namespace App\Decorator\Items;
 4 | 
 5 | use App\Decorator\Character;
 6 | use App\Decorator\CharacterDecorator;
 7 | 
 8 | class LighteningBoltOfZeus extends CharacterDecorator
 9 | {
10 |     public function __construct(Character $character)
11 |     {
12 |         parent::__construct($character);
13 |         
14 |         $this->totalDexterity = 36;
15 |     }
16 | }


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/src/Decorator/Items/Mjolnir.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Decorator\Items;
 4 | 
 5 | use App\Decorator\Character;
 6 | use App\Decorator\CharacterDecorator;
 7 | 
 8 | class Mjolnir extends CharacterDecorator
 9 | {
10 |     public function __construct(Character $character)
11 |     {
12 |         parent::__construct($character);
13 |         
14 |         $this->totalStrength = 40;
15 |     }
16 | }


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/src/Decorator/Items/SwordOfTheDestiny.php:
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 1 | <?php
 2 | 
 3 | namespace App\Decorator\Items;
 4 | 
 5 | use App\Decorator\Character;
 6 | use App\Decorator\CharacterDecorator;
 7 | 
 8 | class SwordOfTheDestiny extends CharacterDecorator
 9 | {
10 |     public function __construct(Character $character)
11 |     {
12 |         parent::__construct($character);
13 | 
14 |         $this->totalStrength = 16;
15 |         $this->totalAgility = -5;
16 |     }
17 | }


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/src/Decorator/Items/TridentOfPoseidon.php:
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 1 | <?php
 2 | 
 3 | namespace App\Decorator\Items;
 4 | 
 5 | use App\Decorator\Character;
 6 | use App\Decorator\CharacterDecorator;
 7 | 
 8 | class TridentOfPoseidon extends CharacterDecorator
 9 | {
10 |     public function __construct(Character $character)
11 |     {
12 |         parent::__construct($character);
13 | 
14 |         $this->totalIntelligence = 20;
15 |     }
16 | }


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/src/Facade/Component/BarCodeUtil.php:
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 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Facade\Component;
 6 | 
 7 | /**
 8 |  * Class BarCodeUtil
 9 |  * @package App\Facade\Component
10 |  */
11 | class BarCodeUtil
12 | {
13 |     /**
14 |      * This function was created on this way to show a very common case found in legacy projects where we have a "Util" class
15 |      * with loads of static functions.
16 |      */
17 |     public static function generateBarCode()
18 |     {
19 |         /**
20 |          * This is just an example. It's not a real barcode as you can see.
21 |          */
22 |         return rand(1000000000000, 9000000000000);
23 |     }
24 | }


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/src/Facade/Component/IntegrationSoapErp.php:
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 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Facade\Component;
 6 | 
 7 | /***
 8 |  * Class IntegrationSoapErp
 9 |  * @package App\Facade\Component
10 |  * 
11 |  */
12 | class IntegrationSoapErp
13 | {
14 |     /**
15 |      * This is just an example.
16 |      */
17 |     public function setProductOnMarketplace(Product $product, bool $isOnMarketplace)
18 |     {
19 |         // It could call an external service to inform that the product was added/removed to the Marketplace.
20 |         echo $product->getName() . " updated on the ERP system.\n";
21 |     }
22 | }


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/src/Facade/Component/MarketplaceIntegration.php:
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 1 | <?php
 2 | 
 3 | 
 4 | namespace App\Facade\Component;
 5 | 
 6 | /**
 7 |  * Class MarketplaceIntegration
 8 |  * @package App\Facade\Component
 9 |  */
10 | class MarketplaceIntegration
11 | {
12 |     public function createProduct(Product $product): void
13 |     {
14 |         // It could call an external service here to create the product.
15 |         echo $product->getName() . " created on the Marketplace.\n";
16 |     }
17 | 
18 |     public function insertPrice(string $productUuid, float $price): void
19 |     {
20 |         // It could call an external service here to insert price into the marketplace.
21 |         echo $productUuid . " price inserted on the Marketplace.\n";
22 | 
23 |     }
24 | 
25 |     public function insertStock(string $productUuid, int $stock = 0): void
26 |     {
27 |         // It could call an external service here to insert the amount of products in stock.
28 |         echo $productUuid . " stock amount inserted on the Marketplace.\n";
29 |     }
30 | }


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/src/Facade/Component/Product.php:
--------------------------------------------------------------------------------
  1 | <?php
  2 | 
  3 | namespace App\Facade\Component;
  4 | 
  5 | final class Product
  6 | {
  7 |     protected string $uuid;
  8 | 
  9 |     protected string $name;
 10 | 
 11 |     protected int $barCode;
 12 | 
 13 |     protected int $stock = 0;
 14 | 
 15 |     protected float $price;
 16 | 
 17 |     protected bool $isOnMarketplace = false;
 18 | 
 19 |     /**
 20 |      * @return bool
 21 |      */
 22 |     public function isOnMarketplace(): bool
 23 |     {
 24 |         return $this->isOnMarketplace;
 25 |     }
 26 | 
 27 |     /**
 28 |      * @param bool $isOnMarketplace
 29 |      * @return Product
 30 |      */
 31 |     public function setIsOnMarketplace(bool $isOnMarketplace): Product
 32 |     {
 33 |         $this->isOnMarketplace = $isOnMarketplace;
 34 |         return $this;
 35 |     }
 36 | 
 37 |     /**
 38 |      * @return string
 39 |      */
 40 |     public function getUuid(): string
 41 |     {
 42 |         return $this->uuid;
 43 |     }
 44 | 
 45 |     /**
 46 |      * @param string $uuid
 47 |      * @return Product
 48 |      */
 49 |     public function setUuid(string $uuid): Product
 50 |     {
 51 |         $this->uuid = $uuid;
 52 |         return $this;
 53 |     }
 54 | 
 55 |     /**
 56 |      * @return string
 57 |      */
 58 |     public function getName(): string
 59 |     {
 60 |         return $this->name;
 61 |     }
 62 | 
 63 |     /**
 64 |      * @param string $name
 65 |      * @return Product
 66 |      */
 67 |     public function setName(string $name): Product
 68 |     {
 69 |         $this->name = $name;
 70 |         return $this;
 71 |     }
 72 | 
 73 |     /**
 74 |      * @return int
 75 |      */
 76 |     public function getBarCode(): int
 77 |     {
 78 |         return $this->barCode;
 79 |     }
 80 | 
 81 |     /**
 82 |      * @param int $barCode
 83 |      * @return Product
 84 |      */
 85 |     public function setBarCode(int $barCode): Product
 86 |     {
 87 |         $this->barCode = $barCode;
 88 |         return $this;
 89 |     }
 90 | 
 91 |     /**
 92 |      * @return int
 93 |      */
 94 |     public function getStock(): int
 95 |     {
 96 |         return $this->stock;
 97 |     }
 98 | 
 99 |     /**
100 |      * @param int $stock
101 |      * @return Product
102 |      */
103 |     public function setStock(int $stock): Product
104 |     {
105 |         $this->stock = $stock;
106 |         return $this;
107 |     }
108 | 
109 |     /**
110 |      * @return float
111 |      */
112 |     public function getPrice(): float
113 |     {
114 |         return $this->price;
115 |     }
116 | 
117 |     /**
118 |      * @param float $price
119 |      * @return Product
120 |      */
121 |     public function setPrice(float $price): Product
122 |     {
123 |         $this->price = $price;
124 |         return $this;
125 |     }
126 | }


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/src/Facade/Component/ProductRepository.php:
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 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Facade\Component;
 6 | 
 7 | /**
 8 |  * Class ProductRepository
 9 |  * @package App\Facade\Component
10 |  */
11 | class ProductRepository
12 | {
13 |     public function persist(Product $product): void
14 |     {
15 |         // It could insert into the database here.
16 |         echo $product->getName() . " persisted.\n";
17 |     }
18 | 
19 |     public function update(Product $product): void
20 |     {
21 |         // It could update into the database here.
22 |         echo $product->getName() . " updated.\n";
23 |     }
24 | }


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/src/Facade/ProductFlowFacade.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Facade;
 6 | 
 7 | use App\Facade\Component\BarCodeUtil;
 8 | use App\Facade\Component\IntegrationSoapErp;
 9 | use App\Facade\Component\MarketplaceIntegration;
10 | use App\Facade\Component\Product;
11 | use App\Facade\Component\ProductRepository;
12 | 
13 | /**
14 |  * Class ProductFlowFacade
15 |  */
16 | class ProductFlowFacade
17 | {
18 |     private ProductRepository $productRepository;
19 |     private MarketplaceIntegration $marketplaceIntegration;
20 |     private IntegrationSoapErp $integrationSoapErp;
21 | 
22 |     public function __construct(
23 |         ProductRepository $productRepository,
24 |         MarketplaceIntegration $marketplaceIntegration,
25 |         IntegrationSoapErp $integrationSoapErp
26 |     )
27 |     {
28 |         $this->productRepository = $productRepository;
29 |         $this->marketplaceIntegration = $marketplaceIntegration;
30 |         $this->integrationSoapErp = $integrationSoapErp;
31 |     }
32 | 
33 |     public function createProducts(array $products): void
34 |     {
35 |         foreach ($products as $product) {
36 |             $product = (new Product)
37 |                 ->setBarCode(BarCodeUtil::generateBarCode())
38 |                 ->setName($product['name'])
39 |                 ->setPrice($product['price'])
40 |                 ->setStock($product['stock'])
41 |                 ->setUuid('3786ebae-4816-46a8-88ac-7aa5b530524f');
42 | 
43 |             $this->productRepository->persist($product);
44 | 
45 |             $this->marketplaceIntegration->createProduct($product);
46 | 
47 |             $this->marketplaceIntegration->insertPrice($product->getUuid(), $product->getPrice());
48 | 
49 |             $this->marketplaceIntegration->insertStock($product->getUuid(), $product->getStock());
50 | 
51 |             $product->setIsOnMarketplace(true);
52 | 
53 |             $this->productRepository->update($product);
54 | 
55 |             $this->integrationSoapErp->setProductOnMarketplace($product, true);
56 |         }
57 |     }
58 | }


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/src/FactoryMethod/CalculatorFactory.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\FactoryMethod;
 6 | 
 7 | use App\Strategy\TaxCalculatorStrategy;
 8 | 
 9 | interface CalculatorFactory
10 | {
11 |     public function make(): TaxCalculatorStrategy;
12 | }


--------------------------------------------------------------------------------
/src/FactoryMethod/ElectronicTaxStrategyFactory.php:
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 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\FactoryMethod;
 6 | 
 7 | use App\Strategy\ElectronicTaxStrategy;
 8 | use App\Strategy\TaxCalculatorStrategy;
 9 | 
10 | /**
11 |  * Class ElectronicTaxStrategyFactory
12 |  * @package App\FactoryMethod
13 |  */
14 | class ElectronicTaxStrategyFactory implements CalculatorFactory
15 | {
16 |     public function make(): TaxCalculatorStrategy
17 |     {
18 |         return new ElectronicTaxStrategy();
19 |     }
20 | }


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/src/FactoryMethod/FoodTaxStrategyFactory.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\FactoryMethod;
 6 | 
 7 | use App\Strategy\FoodTaxStrategy;
 8 | use App\Strategy\TaxCalculatorStrategy;
 9 | 
10 | /**
11 |  * Class FoodTaxStrategyFactory
12 |  * @package App\FactoryMethod
13 |  */
14 | class FoodTaxStrategyFactory implements CalculatorFactory
15 | {
16 |     public function make(): TaxCalculatorStrategy
17 |     {
18 |         return new FoodTaxStrategy();
19 |     }
20 | }


--------------------------------------------------------------------------------
/src/FactoryMethod/TaxFreeStrategyFactory.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\FactoryMethod;
 6 | 
 7 | use App\Strategy\TaxCalculatorStrategy;
 8 | use App\Strategy\TaxFreeStrategy;
 9 | 
10 | /**
11 |  * Class TaxFreeStrategyFactory
12 |  * @package App\FactoryMethod
13 |  */
14 | class TaxFreeStrategyFactory implements CalculatorFactory
15 | {
16 |     public function make(): TaxCalculatorStrategy
17 |     {
18 |         return new TaxFreeStrategy();
19 |     }
20 | }


--------------------------------------------------------------------------------
/src/Flyweight/CarStoreFlyweight.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Flyweight;
 4 | 
 5 | use App\Flyweight\Component\Characteristic;
 6 | use App\Flyweight\Component\ColorEnum;
 7 | 
 8 | class CarStoreFlyweight
 9 | {
10 |     /** @var array|Characteristic[] */
11 |     private array $characteristics = [];
12 | 
13 |     public function getCharacteristics(string $brand, string $model, ColorEnum $colorEnum): Characteristic
14 |     {
15 |         $characteristicHash = $this->getCharacteristicKey($brand, $model, $colorEnum);
16 |         if (!isset($this->characteristics[$characteristicHash])) {
17 |             $this->characteristics[$characteristicHash] = new Characteristic($brand, $model, $colorEnum);
18 |         }
19 | 
20 |         return $this->characteristics[$characteristicHash];
21 |     }
22 | 
23 |     public function getCharacteristicKey(string $brand, string $model, ColorEnum $colorEnum)
24 |     {
25 |         return base64_decode($brand . $model . $colorEnum->name);
26 |     }
27 | }


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/src/Flyweight/Component/Car.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Flyweight\Component;
 4 | 
 5 | class Car
 6 | {
 7 |     private string $serialNumber;
 8 | 
 9 |     private Characteristic $characteristic;
10 | 
11 |     /**
12 |      * @param string $serialNumber
13 |      * @param Characteristic $characteristic
14 |      */
15 |     public function __construct(string $serialNumber, Characteristic $characteristic)
16 |     {
17 |         $this->serialNumber = $serialNumber;
18 |         $this->characteristic = $characteristic;
19 |     }
20 | 
21 |     /**
22 |      * @return string
23 |      */
24 |     public function getSerialNumber(): string
25 |     {
26 |         return $this->serialNumber;
27 |     }
28 | 
29 |     /**
30 |      * @param string $serialNumber
31 |      * @return Car
32 |      */
33 |     public function setSerialNumber(string $serialNumber): Car
34 |     {
35 |         $this->serialNumber = $serialNumber;
36 |         return $this;
37 |     }
38 | 
39 |     /**
40 |      * @return Characteristic
41 |      */
42 |     public function getCharacteristic(): Characteristic
43 |     {
44 |         return $this->characteristic;
45 |     }
46 | 
47 |     /**
48 |      * @param Characteristic $characteristic
49 |      * @return Car
50 |      */
51 |     public function setCharacteristic(Characteristic $characteristic): Car
52 |     {
53 |         $this->characteristic = $characteristic;
54 |         return $this;
55 |     }
56 | }


--------------------------------------------------------------------------------
/src/Flyweight/Component/Characteristic.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Flyweight\Component;
 4 | 
 5 | class Characteristic
 6 | {
 7 |     private string $brand;
 8 | 
 9 |     private string $model;
10 | 
11 |     private ColorEnum $color;
12 | 
13 |     /**
14 |      * @param string $brand
15 |      * @param string $model
16 |      * @param ColorEnum $color
17 |      */
18 |     public function __construct(string $brand, string $model, ColorEnum $color)
19 |     {
20 |         $this->brand = $brand;
21 |         $this->model = $model;
22 |         $this->color = $color;
23 |     }
24 | 
25 |     /**
26 |      * @return string
27 |      */
28 |     public function getBrand(): string
29 |     {
30 |         return $this->brand;
31 |     }
32 | 
33 |     /**
34 |      * @param string $brand
35 |      * @return Characteristic
36 |      */
37 |     public function setBrand(string $brand): Characteristic
38 |     {
39 |         $this->brand = $brand;
40 |         return $this;
41 |     }
42 | 
43 |     /**
44 |      * @return string
45 |      */
46 |     public function getModel(): string
47 |     {
48 |         return $this->model;
49 |     }
50 | 
51 |     /**
52 |      * @param string $model
53 |      * @return Characteristic
54 |      */
55 |     public function setModel(string $model): Characteristic
56 |     {
57 |         $this->model = $model;
58 |         return $this;
59 |     }
60 | 
61 |     /**
62 |      * @return ColorEnum
63 |      */
64 |     public function getColor(): ColorEnum
65 |     {
66 |         return $this->color;
67 |     }
68 | 
69 |     /**
70 |      * @param ColorEnum $color
71 |      * @return Characteristic
72 |      */
73 |     public function setColor(ColorEnum $color): Characteristic
74 |     {
75 |         $this->color = $color;
76 |         return $this;
77 |     }
78 | }


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/src/Flyweight/Component/ColorEnum.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Flyweight\Component;
 4 | 
 5 | enum ColorEnum
 6 | {
 7 |     case RED;
 8 |     case BLUE;
 9 |     case GREEN;
10 | }


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/src/Interpreter/AuthorSearch.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Interpreter;
 4 | 
 5 | use App\Interpreter\Component\BlogPostRepository;
 6 | 
 7 | class AuthorSearch implements Expression {
 8 |     private BlogPostRepository $blogPostRepository;
 9 | 
10 |     public function __construct(BlogPostRepository $blogPostRepository) {
11 |         $this->blogPostRepository = $blogPostRepository;
12 |     }
13 | 
14 |     public function interpret(string $context): array {
15 |         return $this->blogPostRepository->findByAuthor($context);
16 |     }
17 | }


--------------------------------------------------------------------------------
/src/Interpreter/Component/BlogPost.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Interpreter\Component;
 4 | 
 5 | /**
 6 |  * This class was created just to make the example work.
 7 |  * It is not part of the Interpreter patter.
 8 |  */
 9 | class BlogPost {
10 |     public string $title;
11 |     public string $author;
12 |     public \DateTimeInterface $date;
13 | 
14 |     public function __construct(string $title, string $author, \DateTimeInterface $date) {
15 |         $this->title = $title;
16 |         $this->author = $author;
17 |         $this->date = $date;
18 |     }
19 | 
20 |     public function __toString() {
21 |         return "Title: {$this->title}, Author: {$this->author}, Date: {$this->date->format('Y-m-d')}";
22 |     }
23 | }
24 | 


--------------------------------------------------------------------------------
/src/Interpreter/Component/BlogPostRepository.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Interpreter\Component;
 4 | 
 5 | /**
 6 |  * This class was created just to make the example work.
 7 |  * It is not part of the Interpreter pattern, and it is not a full implementation of a repository pattern.
 8 |  */
 9 | class BlogPostRepository {
10 |     private array $blogPosts;
11 | 
12 |     public function __construct() {
13 |         $this->blogPosts = [
14 |             new BlogPost('My Blog Post', 'John Doe', new \DateTime('2023-07-01')),
15 |             new BlogPost('Another Blog Post', 'Jane Doe', new \DateTime('2023-07-02')),
16 |             new BlogPost('Yet Another Blog Post', 'John Doe', new \DateTime('2023-07-03')),
17 |         ];
18 |     }
19 | 
20 |     public function findByTitle(string $title): array {
21 |         return array_filter($this->blogPosts, function(BlogPost $blogPost) use ($title) {
22 |             return $blogPost->title === $title;
23 |         });
24 |     }
25 | 
26 |     public function findByAuthor(string $author): array {
27 |         return array_filter($this->blogPosts, function(BlogPost $blogPost) use ($author) {
28 |             return $blogPost->author === $author;
29 |         });
30 |     }
31 | 
32 |     public function findByDate(\DateTimeInterface $date): array {
33 |         return array_filter($this->blogPosts, function(BlogPost $blogPost) use ($date) {
34 |             return $blogPost->date->format('Y-m-d') === $date->format('Y-m-d');
35 |         });
36 |     }
37 | }
38 | 


--------------------------------------------------------------------------------
/src/Interpreter/DateSearch.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Interpreter;
 4 | 
 5 | use App\Interpreter\Component\BlogPostRepository;
 6 | 
 7 | class DateSearch implements Expression
 8 | {
 9 |     private BlogPostRepository $blogPostRepository;
10 | 
11 |     public function __construct(BlogPostRepository $blogPostRepository)
12 |     {
13 |         $this->blogPostRepository = $blogPostRepository;
14 |     }
15 | 
16 |     public function interpret(string $context): array
17 |     {
18 |         // Convert the string to a DateTime object
19 |         $date = \DateTime::createFromFormat('Y-m-d', $context);
20 | 
21 |         return $this->blogPostRepository->findByDate($date);
22 |     }
23 | }


--------------------------------------------------------------------------------
/src/Interpreter/Expression.php:
--------------------------------------------------------------------------------
1 | <?php
2 | 
3 | namespace App\Interpreter;
4 | 
5 | interface Expression
6 | {
7 |     public function interpret(string $context): array;
8 | }
9 | 


--------------------------------------------------------------------------------
/src/Interpreter/SearchQueryInterpreter.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Interpreter;
 4 | 
 5 | use App\Interpreter\Component\BlogPostRepository;
 6 | 
 7 | class SearchQueryInterpreter
 8 | {
 9 |     private BlogPostRepository $blogPostRepository;
10 | 
11 |     public function __construct(BlogPostRepository $blogPostRepository)
12 |     {
13 |         $this->blogPostRepository = $blogPostRepository;
14 |     }
15 | 
16 |     /**
17 |      * @throws \Exception
18 |      */
19 |     public function interpret(string $query): array
20 |     {
21 |         // The query format is "TYPE:CONTEXT"
22 |         $elements = explode(':', $query, 2);
23 |         $type = $elements[0];
24 |         $context = $elements[1] ?? '';
25 | 
26 |         switch ($type) {
27 |             case 'title':
28 |                 $expression = new TitleSearch($this->blogPostRepository);
29 |                 break;
30 |             case 'author':
31 |                 $expression = new AuthorSearch($this->blogPostRepository);
32 |                 break;
33 |             case 'date':
34 |                 $expression = new DateSearch($this->blogPostRepository);
35 |                 break;
36 |             default:
37 |                 throw new \Exception("Invalid search type: $type");
38 |         }
39 | 
40 |         return $expression->interpret($context);
41 |     }
42 | }
43 | 


--------------------------------------------------------------------------------
/src/Interpreter/TitleSearch.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Interpreter;
 4 | 
 5 | use App\Interpreter\Component\BlogPostRepository;
 6 | 
 7 | class TitleSearch implements Expression
 8 | {
 9 |     private BlogPostRepository $blogPostRepository;
10 | 
11 |     public function __construct(BlogPostRepository $blogPostRepository)
12 |     {
13 |         $this->blogPostRepository = $blogPostRepository;
14 |     }
15 | 
16 |     public function interpret(string $context): array
17 |     {
18 |         return $this->blogPostRepository->findByTitle($context);
19 |     }
20 | }


--------------------------------------------------------------------------------
/src/Iterator/UserCollectionIterator.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Iterator;
 4 | 
 5 | class UserCollectionIterator implements \Iterator
 6 | {
 7 |     private UserColletion $collection;
 8 | 
 9 |     private int $position = 0;
10 | 
11 |     private bool $reverse;
12 | 
13 |     public function __construct(UserColletion $collection, bool $reverse = false)
14 |     {
15 |         $this->collection = $collection;
16 |         $this->reverse = $reverse;
17 |     }
18 | 
19 |     public function rewind(): void
20 |     {
21 |         $this->position = $this->reverse
22 |             ? ($this->collection->count() - 1)
23 |             : 0;
24 |     }
25 | 
26 |     public function current(): string
27 |     {
28 |         return $this->collection->getUsers()[$this->position];
29 |     }
30 | 
31 |     public function key(): int
32 |     {
33 |         return $this->position;
34 |     }
35 | 
36 |     public function next(): void
37 |     {
38 |         $this->position = $this->position + ($this->reverse ? -1 : 1);
39 |     }
40 | 
41 |     public function valid(): bool
42 |     {
43 |         return isset($this->collection->getUsers()[$this->position]);
44 |     }
45 | }


--------------------------------------------------------------------------------
/src/Iterator/UserColletion.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Iterator;
 4 | 
 5 | use Exception;
 6 | use Traversable;
 7 | 
 8 | class UserColletion implements \IteratorAggregate
 9 | {
10 |     /** @var array|string[]  */
11 |     private array $users = [];
12 | 
13 |     public function getUsers(): array
14 |     {
15 |         return $this->users;
16 |     }
17 | 
18 |     public function addUser(string $user): self
19 |     {
20 |         $this->users[] = $user;
21 |         return $this;
22 |     }
23 | 
24 |     public function getIterator(): \Iterator
25 |     {
26 |         return new UserCollectionIterator($this);
27 |     }
28 | 
29 |     public function getReverseIterator(): \Iterator
30 |     {
31 |         return new UserCollectionIterator($this, true);
32 |     }
33 | 
34 |     public function count(): int
35 |     {
36 |         return sizeof($this->users);
37 |     }
38 | }


--------------------------------------------------------------------------------
/src/Mediator/ChatRoom.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Mediator;
 4 | 
 5 | class ChatRoom implements ChatRoomMediator
 6 | {
 7 |     public function showMessage(User $user, string $message): void
 8 |     {
 9 |         $time = date('M d, y H:i');
10 |         $sender = $user->getName();
11 | 
12 |         echo $time . '[' . $sender . ']:' . $message;
13 |     }
14 | }


--------------------------------------------------------------------------------
/src/Mediator/ChatRoomMediator.php:
--------------------------------------------------------------------------------
1 | <?php
2 | 
3 | namespace App\Mediator;
4 | 
5 | interface ChatRoomMediator
6 | {
7 |     public function showMessage(User $user, string $message): void;
8 | }


--------------------------------------------------------------------------------
/src/Mediator/User.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Mediator;
 4 | 
 5 | class User
 6 | {
 7 |     protected string $name;
 8 |     protected ChatRoomMediator $chatMediator;
 9 | 
10 |     public function __construct(string $name, ChatRoomMediator $chatMediator)
11 |     {
12 |         $this->name = $name;
13 |         $this->chatMediator = $chatMediator;
14 |     }
15 | 
16 |     public function getName(): string
17 |     {
18 |         return $this->name;
19 |     }
20 | 
21 |     public function send(string $message): void
22 |     {
23 |         $this->chatMediator->showMessage($this, $message);
24 |     }
25 | }


--------------------------------------------------------------------------------
/src/Memento/Caretaker.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Memento;
 4 | 
 5 | class Caretaker
 6 | {
 7 |     /** @var array|TextSnapshot[] */
 8 |     private array $textSnapshots = [];
 9 | 
10 |     private TextEditor $textEditor;
11 | 
12 |     public function __construct(TextEditor $textEditor)
13 |     {
14 |         $this->textEditor = $textEditor;
15 |     }
16 | 
17 |     public function getLastSnapshotDate(): ?\DateTime
18 |     {
19 |         if (empty($this->textSnapshots)) {
20 |             return null;
21 |         }
22 | 
23 |         return $this->textSnapshots[array_key_last($this->textSnapshots)]->getUpdatedAt();
24 |     }
25 | 
26 |     public function backup(): void
27 |     {
28 |         $this->textSnapshots[] = $this->textEditor->createSnapshot();
29 |     }
30 | 
31 |     public function undo(): void
32 |     {
33 |         if (sizeof($this->textSnapshots) === 0) {
34 |             return;
35 |         }
36 | 
37 |         $restoredTextEditor = array_pop($this->textSnapshots);
38 |         $this->textEditor->restore($restoredTextEditor);
39 |     }
40 | }


--------------------------------------------------------------------------------
/src/Memento/TextEditor.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Memento;
 4 | 
 5 | class TextEditor
 6 | {
 7 |     private string $text;
 8 | 
 9 |     public function createSnapshot(): TextSnapshotMemento
10 |     {
11 |         return new TextSnapshot($this->text);
12 |     }
13 | 
14 |     public function getText(): string
15 |     {
16 |         return $this->text;
17 |     }
18 | 
19 |     public function setText(string $text): TextEditor
20 |     {
21 |         $this->text = $text;
22 | 
23 |         return $this;
24 |     }
25 | 
26 |     public function restore(TextSnapshot $textSnapshot)
27 |     {
28 |         $this->text = $textSnapshot->getText();
29 |     }
30 | }


--------------------------------------------------------------------------------
/src/Memento/TextSnapshot.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Memento;
 4 | 
 5 | class TextSnapshot implements TextSnapshotMemento
 6 | {
 7 |     private string $text;
 8 | 
 9 |     private \DateTime $updatedAt;
10 | 
11 |     public function __construct(string $text)
12 |     {
13 |         $this->text = $text;
14 |         $this->updatedAt = new \DateTime();
15 |     }
16 | 
17 |     public function getText(): string
18 |     {
19 |         return $this->text;
20 |     }
21 | 
22 |     public function getUpdatedAt(): \DateTime
23 |     {
24 |         return $this->updatedAt;
25 |     }
26 | }


--------------------------------------------------------------------------------
/src/Memento/TextSnapshotMemento.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Memento;
 4 | 
 5 | interface TextSnapshotMemento
 6 | {
 7 |     public function __construct(string $text);
 8 | 
 9 |     public function getText(): string;
10 | 
11 |     public function getUpdatedAt(): \DateTime;
12 | }


--------------------------------------------------------------------------------
/src/Money/Currency.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Money;
 6 | 
 7 | class Currency
 8 | {
 9 |     private string $name;
10 | 
11 |     private string $symbol;
12 | 
13 |     private function __construct(string $name, string $symbol)
14 |     {
15 |         $this->name = $name;
16 |         $this->symbol = $symbol;
17 |     }
18 | 
19 |     public static function USD(): Currency
20 |     {
21 |         return new self('American Dollar', 'USD');
22 |     }
23 | 
24 |     public static function EUR(): Currency
25 |     {
26 |         return new self('Euro', 'EUR');
27 |     }
28 | 
29 |     public function getName(): string
30 |     {
31 |         return $this->name;
32 |     }
33 | 
34 |     public function getSymbol(): string
35 |     {
36 |         return $this->symbol;
37 |     }
38 | }
39 | 


--------------------------------------------------------------------------------
/src/Money/Money.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Money;
 6 | 
 7 | class Money
 8 | {
 9 |     private int $amount;
10 | 
11 |     private Currency $currency;
12 | 
13 |     public function __construct(int $amount, Currency $currency)
14 |     {
15 |         $this->amount = $amount;
16 |         $this->currency = $currency;
17 |     }
18 | 
19 |     public function __toString(): string
20 |     {
21 |         return (string) $this->amount;
22 |     }
23 | 
24 |     public function getAmount(): int
25 |     {
26 |         return $this->amount;
27 |     }
28 | 
29 |     public function setAmount(int $amount): Money
30 |     {
31 |         $this->amount = $amount;
32 |         return $this;
33 |     }
34 | 
35 |     public function getCurrency(): Currency
36 |     {
37 |         return $this->currency;
38 |     }
39 | 
40 |     public function setCurrency(Currency $currency): Money
41 |     {
42 |         $this->currency = $currency;
43 |         return $this;
44 |     }
45 | 
46 |     public function isEqualTo(Money $money): bool
47 |     {
48 |         return ($this->amount === $money->getAmount()
49 |             && $this->currency->getSymbol() === $money->currency->getSymbol());
50 |     }
51 | 
52 |     /**
53 |      * TODO: The currency should be considered as well.
54 |      */
55 |     public function isGreaterThan(Money $money): bool
56 |     {
57 |         return $this->amount > $money->getAmount();
58 |     }
59 | 
60 |     /**
61 |      * TODO: The currency should be considered as well.
62 |      */
63 |     public function isLowerThan(Money $money): bool
64 |     {
65 |         return $this->amount < $money->getAmount();
66 |     }
67 | }


--------------------------------------------------------------------------------
/src/NullObject/BaseEvent.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\NullObject;
 6 | 
 7 | use App\NullObject\Component\EventDispatcherInterface;
 8 | 
 9 | abstract class BaseEvent
10 | {
11 |     /**
12 |      * @var EventDispatcherInterface
13 |      */
14 |     protected EventDispatcherInterface $eventDispatcher;
15 | 
16 |     public function __construct(EventDispatcherInterface $eventDispatcher)
17 |     {
18 |         $this->eventDispatcher = $eventDispatcher;
19 |     }
20 | 
21 |     public abstract function dispatch(): void;
22 | }


--------------------------------------------------------------------------------
/src/NullObject/Component/EventDispatcher.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\NullObject\Component;
 6 | 
 7 | use App\NullObject\BaseEvent;
 8 | 
 9 | /**
10 |  * Class EventDispatcher
11 |  * @package App\NullObject\Component
12 |  */
13 | class EventDispatcher implements EventDispatcherInterface
14 | {
15 |     public function dispatch(string $serializedEvent): void
16 |     {
17 |         dump("Event '{$serializedEvent}' dispatched.");
18 |     }
19 | }


--------------------------------------------------------------------------------
/src/NullObject/Component/EventDispatcherInterface.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\NullObject\Component;
 6 | 
 7 | use App\NullObject\BaseEvent;
 8 | 
 9 | /**
10 |  * Interface EventDispatcherInterface
11 |  * @package App\NullObject\Component
12 |  */
13 | interface EventDispatcherInterface
14 | {
15 |     public function dispatch(string $serializedEvent): void;
16 | }


--------------------------------------------------------------------------------
/src/NullObject/Component/NullEventDispatcher.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\NullObject\Component;
 6 | 
 7 | /**
 8 |  * Class EventDispatcher
 9 |  * @package App\NullObject\Component
10 |  */
11 | class NullEventDispatcher implements EventDispatcherInterface
12 | {
13 |     public function dispatch(string $serializedEvent): void
14 |     {
15 |         dump("Nothing happened here.");
16 |     }
17 | }


--------------------------------------------------------------------------------
/src/NullObject/InvoiceCreatedEvent.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\NullObject;
 6 | 
 7 | class InvoiceCreatedEvent extends BaseEvent
 8 | {
 9 |     public function dispatch(): void
10 |     {
11 |         $serializedEvent = get_class($this);
12 | 
13 |         $this->eventDispatcher->dispatch($serializedEvent);
14 |     }
15 | }


--------------------------------------------------------------------------------
/src/ObjectPool/DatabaseConnection.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\ObjectPool;
 4 | 
 5 | class DatabaseConnection
 6 | {
 7 |     private static ?DatabaseConnection $instance = null;
 8 | 
 9 |     private function __construct()
10 |     {
11 |         // private constructor to prevent direct instantiation
12 |     }
13 | 
14 |     public static function getInstance(): self
15 |     {
16 |         if (!self::$instance) {
17 |             self::$instance = new self();
18 |         }
19 |         return self::$instance;
20 |     }
21 | 
22 |     public function query(string $query): void
23 |     {
24 |         // Execute the given query...
25 |         echo "Executing query: $query\n";
26 |     }
27 | }


--------------------------------------------------------------------------------
/src/ObjectPool/DatabaseConnectionPool.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\ObjectPool;
 4 | 
 5 | class DatabaseConnectionPool
 6 | {
 7 |     private array $availableConnections = [];
 8 |     private array $inUseConnections = [];
 9 | 
10 |     public function get(): DatabaseConnection
11 |     {
12 |         if (count($this->availableConnections) === 0) {
13 |             $connection = DatabaseConnection::getInstance();
14 |             $this->inUseConnections[] = $connection;
15 |             return $connection;
16 |         } else {
17 |             $connection = array_pop($this->availableConnections);
18 |             $this->inUseConnections[] = $connection;
19 |             return $connection;
20 |         }
21 |     }
22 | 
23 |     public function release(DatabaseConnection $connection): void
24 |     {
25 |         $index = array_search($connection, $this->inUseConnections, true);
26 |         if ($index !== false) {
27 |             unset($this->inUseConnections[$index]);
28 |             $this->availableConnections[] = $connection;
29 |         }
30 |     }
31 | }
32 | 


--------------------------------------------------------------------------------
/src/Observer/Component/Invoice.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Observer\Component;
 4 | 
 5 | class Invoice
 6 | {
 7 |     private int $invoiceNumber;
 8 | 
 9 |     private float $invoiceAmount;
10 | 
11 |     private string $state;
12 | 
13 |     private string $customerEmailAddress;
14 | 
15 |     public function __construct(int $invoiceNumber, float $invoiceAmount, string $state, string $customerEmailAddress)
16 |     {
17 |         $this->invoiceNumber = $invoiceNumber;
18 |         $this->invoiceAmount = $invoiceAmount;
19 |         $this->state = $state;
20 |         $this->customerEmailAddress = $customerEmailAddress;
21 |     }
22 | 
23 |     public function getInvoiceNumber(): int
24 |     {
25 |         return $this->invoiceNumber;
26 |     }
27 | 
28 |     public function getInvoiceAmount(): float
29 |     {
30 |         return $this->invoiceAmount;
31 |     }
32 | 
33 |     public function getState(): string
34 |     {
35 |         return $this->state;
36 |     }
37 | 
38 |     public function getCustomerEmailAddress(): string
39 |     {
40 |         return $this->customerEmailAddress;
41 |     }
42 | 
43 |     public function setInvoiceNumber(int $invoiceNumber): Invoice
44 |     {
45 |         $this->invoiceNumber = $invoiceNumber;
46 |         return $this;
47 |     }
48 | 
49 |     public function setInvoiceAmount(float $invoiceAmount): Invoice
50 |     {
51 |         $this->invoiceAmount = $invoiceAmount;
52 |         return $this;
53 |     }
54 | 
55 |     public function setState(string $state): Invoice
56 |     {
57 |         $this->state = $state;
58 |         return $this;
59 |     }
60 | 
61 |     public function setCustomerEmailAddress(string $customerEmailAddress): Invoice
62 |     {
63 |         $this->customerEmailAddress = $customerEmailAddress;
64 |         return $this;
65 |     }
66 | }


--------------------------------------------------------------------------------
/src/Observer/Component/InvoiceEventType.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Observer\Component;
 4 | 
 5 | enum InvoiceEventType
 6 | {
 7 |     case CREATED;
 8 | 
 9 |     case APPROVED;
10 | 
11 |     case CANCELED;
12 | }


--------------------------------------------------------------------------------
/src/Observer/EmailAlertListener.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Observer;
 4 | 
 5 | use App\Observer\Component\Invoice;
 6 | 
 7 | class EmailAlertListener implements EventListener
 8 | {
 9 |     public function notified(Invoice $invoice, array $extraData)
10 |     {
11 |         echo sprintf(
12 |             "Email sent to `%s` informing that the invoice with number `%s` is now in state `%s`.\n",
13 |             $invoice->getCustomerEmailAddress(),
14 |             $invoice->getInvoiceNumber(),
15 |             $invoice->getState()
16 |         );
17 |     }
18 | }


--------------------------------------------------------------------------------
/src/Observer/EventListener.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Observer;
 4 | 
 5 | use App\Observer\Component\Invoice;
 6 | 
 7 | interface EventListener
 8 | {
 9 |     public function notified(Invoice $invoice, array $extraData);
10 | }


--------------------------------------------------------------------------------
/src/Observer/InvoiceEventManager.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Observer;
 4 | 
 5 | use App\Observer\Component\Invoice;
 6 | use App\Observer\Component\InvoiceEventType;
 7 | 
 8 | class InvoiceEventManager
 9 | {
10 |     public array $listeners = [];
11 | 
12 |     public function subscribe(InvoiceEventType $eventType, EventListener $eventListener): void
13 |     {
14 |         if ($this->isListenerSubscribed($eventType, $eventListener)) {
15 |             return;
16 |         }
17 | 
18 |         echo sprintf("Listener `%s` subscribed to `%s`.\n", get_class($eventListener), $eventType->name);
19 | 
20 |         $this->listeners[$eventType->name][] = $eventListener;
21 |     }
22 | 
23 |     public function unsubscribe(InvoiceEventType $eventType, EventListener $eventListener): void
24 |     {
25 |         if (empty($this->listeners[$eventType->name])) {
26 |             return;
27 |         }
28 | 
29 |         foreach ($this->listeners[$eventType->name] as $index => $listener) {
30 |             if ($listener instanceof $eventListener) {
31 |                 unset($this->listeners[$eventType->name][$index]);
32 |                 return;
33 |             }
34 |         }
35 |     }
36 | 
37 |     public function notifySubscribers(InvoiceEventType $eventType, Invoice $invoice, array $extraData = []): void
38 |     {
39 |         if (empty($this->listeners[$eventType->name])) {
40 |             return;
41 |         }
42 | 
43 |         /** @var EventListener $listener */
44 |         foreach ($this->listeners[$eventType->name] as $listener) {
45 |             $listener->notified($invoice, $extraData);
46 |         }
47 |     }
48 | 
49 |     /**
50 |      * This function was created just to check if the subscriber is already registered to the listener.
51 |      * In another languages and/or if you are using a different way to store the listeners/subscribers, probably you do not even need it.
52 |      */
53 |     private function isListenerSubscribed(InvoiceEventType $eventType, EventListener $eventListener): bool
54 |     {
55 |         if (empty($this->listeners[$eventType->name])) {
56 |             return false;
57 |         }
58 | 
59 |         foreach ($this->listeners[$eventType->name] as $listener) {
60 |             if ($listener instanceof $eventListener) {
61 |                 return true;
62 |             }
63 |         }
64 | 
65 |         return false;
66 |     }
67 | }


--------------------------------------------------------------------------------
/src/Observer/PushNotificationListener.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Observer;
 4 | 
 5 | use App\Observer\Component\Invoice;
 6 | 
 7 | class PushNotificationListener implements EventListener
 8 | {
 9 |     public function notified(Invoice $invoice, array $extraData)
10 |     {
11 |         echo sprintf(
12 |             "Push notification was sent informing that the invoice with number `%s` is now in state `%s`.\n",
13 |             $invoice->getInvoiceNumber(),
14 |             $invoice->getState()
15 |         );
16 |     }
17 | }


--------------------------------------------------------------------------------
/src/Prototype/BookA.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Prototype;
 4 | 
 5 | class BookA extends BookPrototype
 6 | {
 7 |     public function __construct()
 8 |     {
 9 |         $this->setSubject('Book A');
10 |     }
11 | 
12 |     public function __clone()
13 |     {
14 |         echo 'Book A cloned';ln();
15 |     }
16 | }


--------------------------------------------------------------------------------
/src/Prototype/BookB.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Prototype;
 4 | 
 5 | class BookB extends BookPrototype
 6 | {
 7 |     public function __construct()
 8 |     {
 9 |         $this->setSubject('Book B');
10 |     }
11 | 
12 |     public function __clone()
13 |     {
14 |         echo 'Book B cloned';ln();
15 |     }
16 | }


--------------------------------------------------------------------------------
/src/Prototype/BookPrototype.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Prototype;
 4 | 
 5 | abstract class BookPrototype
 6 | {
 7 |     protected string $title;
 8 | 
 9 |     protected string $subject;
10 | 
11 |     protected string $authorName;
12 | 
13 |     abstract public function __clone();
14 | 
15 |     public function getTitle(): string
16 |     {
17 |         return $this->title;
18 |     }
19 | 
20 |     public function setTitle(string $title): BookPrototype
21 |     {
22 |         $this->title = $title;
23 |         return $this;
24 |     }
25 | 
26 |     public function getSubject(): string
27 |     {
28 |         return $this->subject;
29 |     }
30 | 
31 |     public function setSubject(string $subject): BookPrototype
32 |     {
33 |         $this->subject = $subject;
34 |         return $this;
35 |     }
36 | 
37 |     public function getAuthorName(): string
38 |     {
39 |         return $this->authorName;
40 |     }
41 | 
42 |     public function setAuthorName(string $authorName): BookPrototype
43 |     {
44 |         $this->authorName = $authorName;
45 |         return $this;
46 |     }
47 | }


--------------------------------------------------------------------------------
/src/Proxy/Component/Address.php:
--------------------------------------------------------------------------------
  1 | <?php
  2 | 
  3 | namespace App\Proxy\Component;
  4 | 
  5 | class Address
  6 | {
  7 |     private string $street;
  8 | 
  9 |     private string $number;
 10 | 
 11 |     private string $district;
 12 | 
 13 |     private string $county;
 14 | 
 15 |     private string $country;
 16 | 
 17 |     private string $postcode;
 18 | 
 19 |     /**
 20 |      * @return string
 21 |      */
 22 |     public function getStreet(): string
 23 |     {
 24 |         return $this->street;
 25 |     }
 26 | 
 27 |     /**
 28 |      * @param string $street
 29 |      * @return Address
 30 |      */
 31 |     public function setStreet(string $street): Address
 32 |     {
 33 |         $this->street = $street;
 34 |         return $this;
 35 |     }
 36 | 
 37 |     /**
 38 |      * @return string
 39 |      */
 40 |     public function getNumber(): string
 41 |     {
 42 |         return $this->number;
 43 |     }
 44 | 
 45 |     /**
 46 |      * @param string $number
 47 |      * @return Address
 48 |      */
 49 |     public function setNumber(string $number): Address
 50 |     {
 51 |         $this->number = $number;
 52 |         return $this;
 53 |     }
 54 | 
 55 |     /**
 56 |      * @return string
 57 |      */
 58 |     public function getDistrict(): string
 59 |     {
 60 |         return $this->district;
 61 |     }
 62 | 
 63 |     /**
 64 |      * @param string $district
 65 |      * @return Address
 66 |      */
 67 |     public function setDistrict(string $district): Address
 68 |     {
 69 |         $this->district = $district;
 70 |         return $this;
 71 |     }
 72 | 
 73 |     /**
 74 |      * @return string
 75 |      */
 76 |     public function getCounty(): string
 77 |     {
 78 |         return $this->county;
 79 |     }
 80 | 
 81 |     /**
 82 |      * @param string $county
 83 |      * @return Address
 84 |      */
 85 |     public function setCounty(string $county): Address
 86 |     {
 87 |         $this->county = $county;
 88 |         return $this;
 89 |     }
 90 | 
 91 |     /**
 92 |      * @return string
 93 |      */
 94 |     public function getCountry(): string
 95 |     {
 96 |         return $this->country;
 97 |     }
 98 | 
 99 |     /**
100 |      * @param string $country
101 |      * @return Address
102 |      */
103 |     public function setCountry(string $country): Address
104 |     {
105 |         $this->country = $country;
106 |         return $this;
107 |     }
108 | 
109 |     /**
110 |      * @return string
111 |      */
112 |     public function getPostcode(): string
113 |     {
114 |         return $this->postcode;
115 |     }
116 | 
117 |     /**
118 |      * @param string $postcode
119 |      * @return Address
120 |      */
121 |     public function setPostcode(string $postcode): Address
122 |     {
123 |         $this->postcode = $postcode;
124 |         return $this;
125 |     }
126 | }


--------------------------------------------------------------------------------
/src/Proxy/GoogleMapsIntegration.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Proxy;
 4 | 
 5 | class GoogleMapsIntegration implements GoogleMapsIntegrationSubject
 6 | {
 7 |     public function getAddressByCoordinates(float $latitude, float $longitude)
 8 |     {
 9 |         // Complex integration here.
10 | 
11 |         echo 'Make a real request here and return the address.';
12 | 
13 |         return [
14 |             'street' => 'Charlottenstrasse',
15 |             'number' => 1234,
16 |             'postcode' => 12345,
17 |             'district' => 'Mitte',
18 |             'county' => 'Berlin',
19 |             'country' => 'Germany'
20 |         ];
21 |     }
22 | }


--------------------------------------------------------------------------------
/src/Proxy/GoogleMapsIntegrationProxy.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Proxy;
 4 | 
 5 | use App\Proxy\Component\Address;
 6 | 
 7 | class GoogleMapsIntegrationProxy implements GoogleMapsIntegrationSubject
 8 | {
 9 |     private GoogleMapsIntegrationSubject $originalGoogleMapsIntegration;
10 | 
11 |     public function __construct(GoogleMapsIntegrationSubject $originalGoogleMapsIntegration)
12 |     {
13 |         $this->originalGoogleMapsIntegration = $originalGoogleMapsIntegration;
14 |     }
15 | 
16 |     public function getAddressByCoordinates(float $latitude, float $longitude)
17 |     {
18 |         $response = $this->originalGoogleMapsIntegration->getAddressByCoordinates($latitude, $longitude);
19 | 
20 |         return (new Address)
21 |             ->setCountry($response['country'])
22 |             ->setCounty($response['county'])
23 |             ->setDistrict($response['district'])
24 |             ->setNumber($response['number'])
25 |             ->setPostcode($response['postcode'])
26 |             ->setStreet($response['street']);
27 |     }
28 | }


--------------------------------------------------------------------------------
/src/Proxy/GoogleMapsIntegrationSubject.php:
--------------------------------------------------------------------------------
1 | <?php
2 | 
3 | namespace App\Proxy;
4 | 
5 | interface GoogleMapsIntegrationSubject
6 | {
7 |     public function getAddressByCoordinates(float $latitude, float $longitude);
8 | }


--------------------------------------------------------------------------------
/src/Singleton/DBConnectionSingleton.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Singleton;
 4 | 
 5 | class DBConnectionSingleton
 6 | {
 7 |     private static ?DBConnectionSingleton $instance = null;
 8 | 
 9 |     private function __construct()
10 |     {
11 |     }
12 | 
13 |     private function __clone(): void
14 |     {
15 |     }
16 | 
17 |     public static function getConnection(): self
18 |     {
19 |         if (self::$instance === null) {
20 |             self::$instance = new self();
21 |         }
22 | 
23 |         return self::$instance;
24 |     }
25 | 
26 |     public function doSomething(): string
27 |     {
28 |         return 'It worked!';
29 |     }
30 | }


--------------------------------------------------------------------------------
/src/State/InvoiceContext.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\State;
 4 | 
 5 | class InvoiceContext
 6 | {
 7 |     protected State $state;
 8 | 
 9 |     public function __construct(State $state)
10 |     {
11 |         $this->state = $state;
12 |         $this->state->setContext($this);
13 |     }
14 | 
15 |     public function transitionTo(State $state): void
16 |     {
17 |         echo "State transition to " . get_class($state) . ".\n";
18 |         $this->state = $state;
19 |         $this->state->setContext($this);
20 |     }
21 | 
22 |     public function doSomething1(): void
23 |     {
24 |         $this->state->handle1();
25 |     }
26 | 
27 |     public function doSomething2(): void
28 |     {
29 |         $this->state->handle2();
30 |     }
31 | 
32 |     public function cancelOrder(): void
33 |     {
34 |         $this->state->cancelOrder();
35 |     }
36 | }


--------------------------------------------------------------------------------
/src/State/State.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\State;
 4 | 
 5 | abstract class State
 6 | {
 7 |     protected InvoiceContext $invoiceContext;
 8 | 
 9 |     public function setContext(InvoiceContext $invoiceContext)
10 |     {
11 |         $this->invoiceContext = $invoiceContext;
12 |     }
13 | 
14 |     public function cancelOrder(): void
15 |     {
16 |         $this->invoiceContext->transitionTo(new StateInvoiceCanceled());
17 |     }
18 | 
19 |     public abstract function handle1(): void;
20 | 
21 |     public abstract function handle2(): void;
22 | }


--------------------------------------------------------------------------------
/src/State/StateInvoiceApproved.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\State;
 4 | 
 5 | class StateInvoiceApproved extends State
 6 | {
 7 |     public function handle1(): void
 8 |     {
 9 |         echo "Handle 1 of " . StateInvoiceApproved::class;
10 |         ln();
11 |         $this->invoiceContext->transitionTo(new StateInvoiceShipped());
12 |     }
13 | 
14 |     public function handle2(): void
15 |     {
16 |         echo "Handle 2 of " . StateInvoiceApproved::class;
17 |         ln();
18 |     }
19 | }


--------------------------------------------------------------------------------
/src/State/StateInvoiceCanceled.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\State;
 4 | 
 5 | class StateInvoiceCanceled extends State
 6 | {
 7 |     public function handle1(): void
 8 |     {
 9 |         // TODO: Implement handle1() method.
10 |     }
11 | 
12 |     public function handle2(): void
13 |     {
14 |         // TODO: Implement handle2() method.
15 |     }
16 | }


--------------------------------------------------------------------------------
/src/State/StateInvoiceDelivered.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\State;
 4 | 
 5 | class StateInvoiceDelivered extends State
 6 | {
 7 |     public function handle1(): void
 8 |     {
 9 |         echo "Handle 1 of " . StateInvoiceDelivered::class;
10 |         ln();
11 |     }
12 | 
13 |     public function handle2(): void
14 |     {
15 |         echo "Handle 2 of " . StateInvoiceDelivered::class;
16 |         ln();
17 |     }
18 | }


--------------------------------------------------------------------------------
/src/State/StateInvoicePending.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\State;
 4 | 
 5 | class StateInvoicePending extends State
 6 | {
 7 |     public function handle1(): void
 8 |     {
 9 |         echo "Handle 1 of " . StateInvoicePending::class;
10 |         ln();
11 |         $this->invoiceContext->transitionTo(new StateInvoiceApproved());
12 |     }
13 | 
14 |     public function handle2(): void
15 |     {
16 |         echo "Handle 2 of " . StateInvoicePending::class;
17 |         ln();
18 |     }
19 | }


--------------------------------------------------------------------------------
/src/State/StateInvoiceShipped.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\State;
 4 | 
 5 | class StateInvoiceShipped extends State
 6 | {
 7 |     public function handle1(): void
 8 |     {
 9 |         echo "Handle 1 of " . StateInvoiceShipped::class;
10 |         ln();
11 |     }
12 | 
13 |     public function handle2(): void
14 |     {
15 |         echo "Handle 2 of " . StateInvoiceShipped::class;
16 |         ln();
17 |         $this->invoiceContext->transitionTo(new StateInvoiceDelivered());
18 |     }
19 | }


--------------------------------------------------------------------------------
/src/Strategy/Component/Product.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Strategy\Component;
 6 | 
 7 | /**
 8 |  * Class Product
 9 |  * @package App\Strategy\Component
10 |  */
11 | class Product
12 | {
13 |     private string $name;
14 | 
15 |     private string $category;
16 | 
17 |     private float $price;
18 | 
19 |     private float $taxes;
20 | 
21 |     /**
22 |      * @return string
23 |      */
24 |     public function getCategory(): string
25 |     {
26 |         return $this->category;
27 |     }
28 | 
29 |     /**
30 |      * @param string $category
31 |      * @return Product
32 |      */
33 |     public function setCategory(string $category): Product
34 |     {
35 |         $this->category = $category;
36 |         return $this;
37 |     }
38 | 
39 |     /**
40 |      * @return string
41 |      */
42 |     public function getName(): string
43 |     {
44 |         return $this->name;
45 |     }
46 | 
47 |     /**
48 |      * @param string $name
49 |      * @return Product
50 |      */
51 |     public function setName(string $name): Product
52 |     {
53 |         $this->name = $name;
54 |         return $this;
55 |     }
56 | 
57 |     /**
58 |      * @return float
59 |      */
60 |     public function getPrice(): float
61 |     {
62 |         return $this->price;
63 |     }
64 | 
65 |     /**
66 |      * @param float $price
67 |      * @return Product
68 |      */
69 |     public function setPrice(float $price): Product
70 |     {
71 |         $this->price = $price;
72 |         return $this;
73 |     }
74 | 
75 |     /**
76 |      * @return float
77 |      */
78 |     public function getTaxes(): float
79 |     {
80 |         return $this->taxes;
81 |     }
82 | 
83 |     /**
84 |      * @param float $taxes
85 |      * @return Product
86 |      */
87 |     public function setTaxes(float $taxes): Product
88 |     {
89 |         $this->taxes = $taxes;
90 |         return $this;
91 |     }
92 | }


--------------------------------------------------------------------------------
/src/Strategy/Context.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Strategy;
 6 | 
 7 | use App\Strategy\Component\Product;
 8 | 
 9 | class Context
10 | {
11 |     /**
12 |      * @var TaxCalculatorStrategy
13 |      */
14 |     private TaxCalculatorStrategy $taxCalculatorStrategy;
15 | 
16 |     /**
17 |      * Context constructor.
18 |      * @param TaxCalculatorStrategy $taxCalculatorStrategy
19 |      */
20 |     public function __construct(TaxCalculatorStrategy $taxCalculatorStrategy)
21 |     {
22 |         $this->taxCalculatorStrategy = $taxCalculatorStrategy;
23 |     }
24 | 
25 |     public function calculateProduct(Product $product): void
26 |     {
27 |         $taxes = $this->taxCalculatorStrategy->calculate($product);
28 | 
29 |         $product->setTaxes($taxes);
30 |     }
31 | }


--------------------------------------------------------------------------------
/src/Strategy/ElectronicTaxStrategy.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Strategy;
 6 | 
 7 | use App\Strategy\Component\Product;
 8 | 
 9 | /**
10 |  * Class ElectronicTaxStrategy
11 |  * @package App\Strategy
12 |  */
13 | class ElectronicTaxStrategy implements TaxCalculatorStrategy
14 | {
15 |     const TAX_RATE = 40.0;
16 | 
17 |     /**
18 |      * @param Product $product
19 |      * @return float
20 |      */
21 |     public function calculate(Product $product): float
22 |     {
23 |         return $product->getPrice() * (self::TAX_RATE / 100);
24 |     }
25 | }


--------------------------------------------------------------------------------
/src/Strategy/FoodTaxStrategy.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Strategy;
 6 | 
 7 | use App\Strategy\Component\Product;
 8 | 
 9 | class FoodTaxStrategy implements TaxCalculatorStrategy
10 | {
11 |     const TAX_RATE = 30.0;
12 | 
13 |     /**
14 |      * @param Product $product
15 |      * @return float
16 |      */
17 |     public function calculate(Product $product): float
18 |     {
19 |         return $product->getPrice() * (self::TAX_RATE / 100);
20 |     }
21 | }


--------------------------------------------------------------------------------
/src/Strategy/TaxCalculatorStrategy.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Strategy;
 6 | 
 7 | use App\Strategy\Component\Product;
 8 | 
 9 | /**
10 |  * Interface TaxCalculatorStrategy
11 |  * @package App\Strategy
12 |  */
13 | interface TaxCalculatorStrategy
14 | {
15 |     /**
16 |      * @param Product $product
17 |      * @return float
18 |      */
19 |     public function calculate(Product $product): float;
20 | }


--------------------------------------------------------------------------------
/src/Strategy/TaxFreeStrategy.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\Strategy;
 6 | 
 7 | use App\Strategy\Component\Product;
 8 | 
 9 | /**
10 |  * Class TaxFreeStrategy
11 |  * @package App\Strategy
12 |  */
13 | class TaxFreeStrategy implements TaxCalculatorStrategy
14 | {
15 |     public function calculate(Product $product): float
16 |     {
17 |         return 0;
18 |     }
19 | }


--------------------------------------------------------------------------------
/src/TemplateMethod/CertificateGenerator.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\TemplateMethod;
 6 | 
 7 | use App\TemplateMethod\Component\StudentDto;
 8 | 
 9 | /**
10 |  * Class CertificateGenerator
11 |  * @package App\TemplateMethod
12 |  */
13 | abstract class CertificateGenerator
14 | {
15 |     /**
16 |      * Method responsible for processing all the steps related to the certificate generation.
17 |      *
18 |      * @param StudentDto $studentDto
19 |      */
20 |     public function processCertificateFlow(StudentDto $studentDto): void
21 |     {
22 |         $certificate = $this->generateCertificate($studentDto);
23 |         $this->sendCertificateByEmail($studentDto, $certificate);
24 |     }
25 | 
26 |     protected abstract function generateCertificate(StudentDto $studentDto): string;
27 | 
28 |     protected abstract function sendCertificateByEmail(StudentDto $studentDto, string $certificateString): void;
29 | 
30 |     protected function notifyStudentBySms(int $phoneNumber, string $studentName) {
31 |         // This is just a simulation.
32 |         dump("SMS message sent to {$phoneNumber}: Hello {$studentName}, you certificate was generated.");
33 |     }
34 | }


--------------------------------------------------------------------------------
/src/TemplateMethod/Component/StudentDto.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\TemplateMethod\Component;
 6 | 
 7 | /**
 8 |  * Class StudentDto
 9 |  * @package App\TemplateMethod
10 |  */
11 | class StudentDto
12 | {
13 |     private string $name;
14 |     private string $courseName;
15 |     private \DateTimeImmutable $completedAt;
16 |     private string $email;
17 |     private int $phoneNumber;
18 | 
19 |     public function __construct(
20 |         string $name,
21 |         string $courseName,
22 |         \DateTimeImmutable $completedAt,
23 |         string $email,
24 |         int $phoneNumber
25 |     )
26 |     {
27 |         $this->name = $name;
28 |         $this->courseName = $courseName;
29 |         $this->completedAt = $completedAt;
30 |         $this->email = $email;
31 |         $this->phoneNumber = $phoneNumber;
32 |     }
33 | 
34 |     /**
35 |      * @return string
36 |      */
37 |     public function getName(): string
38 |     {
39 |         return $this->name;
40 |     }
41 | 
42 |     /**
43 |      * @return string
44 |      */
45 |     public function getCourseName(): string
46 |     {
47 |         return $this->courseName;
48 |     }
49 | 
50 |     /**
51 |      * @return \DateTimeImmutable
52 |      */
53 |     public function getCompletedAt(): \DateTimeImmutable
54 |     {
55 |         return $this->completedAt;
56 |     }
57 | 
58 |     /**
59 |      * @return string
60 |      */
61 |     public function getEmail(): string
62 |     {
63 |         return $this->email;
64 |     }
65 | 
66 |     /**
67 |      * @return int
68 |      */
69 |     public function getPhoneNumber(): int
70 |     {
71 |         return $this->phoneNumber;
72 |     }
73 | }


--------------------------------------------------------------------------------
/src/TemplateMethod/DevCertificateGenerator.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\TemplateMethod;
 6 | 
 7 | use App\TemplateMethod\Component\StudentDto;
 8 | 
 9 | /**
10 |  * Class DevCertificateGenerator
11 |  * @package App\TemplateMethod
12 |  */
13 | class DevCertificateGenerator extends CertificateGenerator
14 | {
15 |     protected function generateCertificate(StudentDto $studentDto): string
16 |     {
17 |         $completedAt = $studentDto->getCompletedAt()->format('Y-m-d');
18 | 
19 |         return "[DEVELOPMENT] Student {$studentDto->getName()} completed the course {$studentDto->getCourseName()} on {$completedAt}";
20 |     }
21 | 
22 |     protected function sendCertificateByEmail(StudentDto $studentDto, string $certificateString): void
23 |     {
24 |         dump("Email sent to {$studentDto->getEmail()} with certificate: {$certificateString}");
25 | 
26 |         $this->notifyStudentBySms($studentDto->getPhoneNumber(), $studentDto->getName());
27 |     }
28 | }


--------------------------------------------------------------------------------
/src/TemplateMethod/MarketingCertificateGenerator.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\TemplateMethod;
 6 | 
 7 | use App\TemplateMethod\Component\StudentDto;
 8 | 
 9 | /**
10 |  * Class MarketingCertificateGenerator
11 |  * @package App\TemplateMethod
12 |  */
13 | class MarketingCertificateGenerator extends CertificateGenerator
14 | {
15 |     protected function generateCertificate(StudentDto $studentDto): string
16 |     {
17 |         $completedAt = $studentDto->getCompletedAt()->format('Y-m-d');
18 | 
19 |         return "[MARKETING] Student {$studentDto->getName()} completed the course {$studentDto->getCourseName()} on {$completedAt}";
20 |     }
21 | 
22 |     protected function sendCertificateByEmail(StudentDto $studentDto, string $certificateString): void
23 |     {
24 |         dump("Email sent to {$studentDto->getEmail()} with certificate: {$certificateString}");
25 | 
26 |         $this->notifyStudentBySms($studentDto->getPhoneNumber(), $studentDto->getName());
27 |     }
28 | }


--------------------------------------------------------------------------------
/src/TemplateMethod/PhotoCertificateGenerator.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace App\TemplateMethod;
 6 | 
 7 | use App\TemplateMethod\Component\StudentDto;
 8 | 
 9 | /**
10 |  * Class PhotoCertificateGenerator
11 |  * @package App\TemplateMethod
12 |  */
13 | class PhotoCertificateGenerator extends CertificateGenerator
14 | {
15 |     protected function generateCertificate(StudentDto $studentDto): string
16 |     {
17 |         $completedAt = $studentDto->getCompletedAt()->format('Y-m-d');
18 | 
19 |         $this->notifyStudentBySms($studentDto->getPhoneNumber(), $studentDto->getName());
20 | 
21 |         return "[PHOTOGRAPHY] Student {$studentDto->getName()} completed the course {$studentDto->getCourseName()} on {$completedAt}";
22 |     }
23 | 
24 |     protected function sendCertificateByEmail(StudentDto $studentDto, string $certificateString): void
25 |     {
26 |         dump("Email sent to {$studentDto->getEmail()} with certificate: {$certificateString}");
27 | 
28 |         $this->notifyStudentBySms($studentDto->getPhoneNumber(), $studentDto->getName());
29 |     }
30 | }


--------------------------------------------------------------------------------
/src/Visitor/AdminUser.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Visitor;
 4 | 
 5 | class AdminUser implements User
 6 | {
 7 |     public function accept(RoleVisitor $roleVisitor): bool
 8 |     {
 9 |         return $roleVisitor->visitAdmin($this);
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/Visitor/CanEditVisitor.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Visitor;
 4 | 
 5 | class CanEditVisitor implements RoleVisitor {
 6 |     public function visitAdmin(AdminUser $admin): bool {
 7 |         return true;
 8 |     }
 9 | 
10 |     public function visitEditor(EditorUser $editor): bool {
11 |         return true;
12 |     }
13 | 
14 |     public function visitViewer(ViewerUser $viewer): bool {
15 |         return false;
16 |     }
17 | }


--------------------------------------------------------------------------------
/src/Visitor/EditorUser.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Visitor;
 4 | 
 5 | class EditorUser implements User
 6 | {
 7 |     public function accept(RoleVisitor $roleVisitor): bool
 8 |     {
 9 |         return $roleVisitor->visitEditor($this);
10 |     }
11 | }


--------------------------------------------------------------------------------
/src/Visitor/RoleVisitor.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Visitor;
 4 | 
 5 | interface RoleVisitor {
 6 |     public function visitAdmin(AdminUser $admin): bool;
 7 | 
 8 |     public function visitEditor(EditorUser $editor): bool;
 9 | 
10 |     public function visitViewer(ViewerUser $viewer): bool;
11 | }


--------------------------------------------------------------------------------
/src/Visitor/User.php:
--------------------------------------------------------------------------------
1 | <?php
2 | 
3 | namespace App\Visitor;
4 | 
5 | interface User {
6 |     public function accept(RoleVisitor $roleVisitor): bool;
7 | }
8 | 


--------------------------------------------------------------------------------
/src/Visitor/ViewerUser.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace App\Visitor;
 4 | 
 5 | class ViewerUser implements User
 6 | {
 7 |     public function accept(RoleVisitor $roleVisitor): bool
 8 |     {
 9 |         return $roleVisitor->visitViewer($this);
10 |     }
11 | }


--------------------------------------------------------------------------------