├── .gitignore
├── .htaccess
├── README.md
├── composer.json
├── controller
    └── HelloController.php
├── index.php
├── model
    ├── AbstractModel.php
    └── Person.php
└── view
    └── helloView.php


/.gitignore:
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1 | .DS_Store
2 | vendor
3 | 


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/.htaccess:
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1 | RewriteEngine On
2 | RewriteBase /
3 | RewriteCond %{REQUEST_FILENAME} !-f
4 | RewriteRule ^ index.php [QSA]


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/README.md:
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 1 | # PHP MVC Sample
 2 | 
 3 | This is a little demonstration of how MVC applications work in PHP. I wrote this code during a live demo so it's not 100% and some shortcuts were taken to speed up the development.
 4 | 
 5 | The idea is to give an understanding of how MVC works, not just specifically in PHP, but in general.
 6 | 
 7 | ## Installing
 8 | 
 9 | Installation is super-simple. Grab [Composer](http://getcomposer.org/) and run `composer install` in the Git repository directory.
10 | 
11 | ## Explanation
12 | 
13 | The idea behind this is that reading, modifying and breaking it will teach a person how to work with MVC in PHP. The comments included in it are also helpful.
14 | 
15 | As a 3-bullet-point primer, I like to think of MVC in this way:
16 | 
17 | * **The Model** - Concerned with data. Creating, Reading, Updating and Deleting.
18 | * **The View** - Concerned with appearance. How the application looks.
19 | * **The Controller** - Concerned with behaviour. How the application acts and flows.


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/composer.json:
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 1 | {
 2 |     "name": "themainframe/php-mvc-sample",
 3 |     "authors": [
 4 |         {
 5 |             "name": "Damien Walsh",
 6 |             "email": "me@damow.net"
 7 |         }
 8 |     ],
 9 |     "require": {
10 | 
11 |     },
12 |     "autoload": {
13 |         "psr-0": {
14 |             "": ["controller/", "model/", "./"]
15 |         }
16 |     }
17 | }
18 | 


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/controller/HelloController.php:
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 1 | <?php
 2 | /**
 3 |  * HelloController
 4 |  * Says hello to a person.
 5 |  *
 6 |  * @author Damien Walsh <me@damow.net>
 7 |  */
 8 | class HelloController
 9 | {
10 |     /**
11 |      * Say hello to a person.
12 |      * $params will be an array of parameters passed by the Front Controller.
13 |      *
14 |      * For this example, the /hello/<ID> route will pass:
15 |      *
16 |      *      $params[0]  -  The whole route, E.g. /hello/1
17 |      *      $params[1]  -  Just the ID, E.g. 1
18 |      *
19 |      * @param array $params The parameters from the URL.
20 |      */
21 |     public function helloAction($params)
22 |     {
23 |         // Find the requested person in the database
24 |         $person = Person::findByColumn('id', $params[1]);
25 | 
26 |         // Render the helloView view
27 |         include 'view/helloView.php';
28 |     }
29 | }
30 | 
31 | 


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/index.php:
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 1 | <?php
 2 | /**
 3 |  * This is the Front Controller.
 4 |  * The Front Controller decides which action to run.
 5 |  *
 6 |  * This particular Front Controller defines a route table, which says
 7 |  * which defines which URLs map to which actions.
 8 |  *
 9 |  * @author Damien Walsh <me@damow.net>
10 |  */
11 | require_once 'vendor/autoload.php';
12 | 
13 | // Define the routes table
14 | $routes = array(
15 |     '/\/hello\/(.+)/' => array('HelloController', 'helloAction')
16 | );
17 | 
18 | // Decide which route to run
19 | foreach ($routes as $url => $action) {
20 | 
21 |     // See if the route matches the current request
22 |     $matches = preg_match($url, $_SERVER['REQUEST_URI'], $params);
23 | 
24 |     // If it matches...
25 |     if ($matches > 0) {
26 | 
27 |         // Run this action, passing the parameters.
28 |         $controller = new $action[0];
29 |         $controller->{$action[1]}($params);
30 | 
31 |         break;
32 |     }
33 | }


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/model/AbstractModel.php:
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 1 | <?php
 2 | /**
 3 |  * AbstractModel Class
 4 |  * A generic representation of a database table.
 5 |  *
 6 |  * For now, the database tables used are stored in the model
 7 |  * classes themselves. This could be modified to access a
 8 |  * "real" database, for example MySQL or SQLite.
 9 |  *
10 |  * Model classes (E.g. Person) inherit this class so that
11 |  * instances can be pulled out from the database.
12 |  *
13 |  * @author Damien Walsh <me@damow.net>
14 |  */
15 | abstract class AbstractModel
16 | {
17 |     /**
18 |      * This method looks through the associated database table
19 |      * for a row that has a certain value in a certain column.
20 |      *
21 |      * For example, a call to:
22 |      *
23 |      *      Person::findByColumn('name', 'Johnny Greensmith');
24 |      *
25 |      * ...would return a new instance of Person, hydrated with
26 |      * Johnny Greensmith's details.
27 |      *
28 |      * @param string $column The column to search in.
29 |      * @param mixed $value The value to search for.
30 |      * @return bool|object
31 |      */
32 |     public static function findByColumn($column, $value)
33 |     {
34 |         // Find the row in the database
35 |         foreach (static::$data as $row) {
36 | 
37 |             // If this is the row...
38 |             if ($row[$column] == $value) {
39 | 
40 |                 // Create a new instance of the actual class
41 |                 $instance = new static;
42 | 
43 |                 // Hydrate the instance with the row contents
44 |                 foreach ($row as $key => $value) {
45 |                     $instance->{$key} = $value;
46 |                 }
47 | 
48 |                 // Return the new instance
49 |                 return $instance;
50 |             }
51 |         }
52 |         return false;
53 |     }
54 | 
55 |     /**
56 |      * This method persists the current instance to the
57 |      * database table it came from.
58 |      *
59 |      * For example, you could modify Johnny Greensmith's favourite
60 |      * colour with the following code:
61 |      *
62 |      *      $jonny = Person::findByColumn('id', 1);
63 |      *      $johnny->fav_colour = 'Orange';
64 |      *      $johnny->persist();
65 |      *
66 |      * This would update the data stored in the Person class.
67 |      * Normally, this would generate an SQL query to persist
68 |      * a row back to the database table it came from.
69 |      */
70 |     public function persist()
71 |     {
72 |         foreach (static::$data as & $row) {
73 |             if ($row['id'] == $this->id) {
74 |                 foreach ($this as $key => $value) {
75 |                     $row[$key] = $value;
76 |                 }
77 |             }
78 |         }
79 |     }
80 | }
81 | 


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/model/Person.php:
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 1 | <?php
 2 | /**
 3 |  * Person Class
 4 |  * Provides access to the "Person" database table.
 5 |  *
 6 |  * @author Damien Walsh <me@damow.net>
 7 |  */
 8 | class Person extends AbstractModel
 9 | {
10 |     /**
11 |      *  Three columns,
12 |      *
13 |      *      - The ID
14 |      *      - The person name
15 |      *      - The person's favourite colour.
16 |      */
17 |     public static $data = array(
18 |         array(
19 |             'id' => 1,
20 |             'name' => 'Johnny Greensmith',
21 |             'fav_colour' => 'Green'
22 |         ),
23 | 
24 |         array(
25 |             'id' => 2,
26 |             'name' => 'Mary Blueton',
27 |             'fav_colour' => 'Blue'
28 |         )
29 |     );
30 | }
31 | 


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/view/helloView.php:
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 1 | <!--
 2 | 
 3 |     This is just a view that defines how the page looks.
 4 |     It doesn't do any logic, access the DB, or anything else.
 5 | 
 6 |     It is completely dumb.
 7 | 
 8 | -->
 9 | 
10 | <h1 style="color: deeppink">
11 |     Hello <?php print $person->name; ?>
12 | </h1>
13 | 
14 | <p>
15 |     You like everything to be <?php print $person->fav_colour; ?> ;)
16 | </p>
17 | 


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