├── l2.variable.php
├── l3.const.php
├── footer.php
├── problem.js
├── l1-echo-print.php
├── l19-session-2.php
├── problem.php
├── hw
    ├── Md Tazul islam
    │   └── leapyear
    │   │   ├── image
    │   │       └── Leap_Year_Algorithm.png
    │   │   └── leapyear.php
    └── Mahmudunnabi
    │   └── Mahmudunnabi
    │       └── leap_year.php
├── images
    ├── C82dABt026S0DyFr1uA5S12gt2aa0uEa62ee2b90a6ddddownload.png
    ├── guB082E52Ay0Sad0CtDuA62aF1at1Sr262ee2b90a56cb1540267867863.jpg
    ├── u2BFAgat25SC0aS0u211yEtA0a28d6rD62ee2b90a70adReact-icon.svg.png
    ├── uD60tg58tu2aA2EAd2C11FaSySrB2a0062ee2b90a62dfblue-1343159_1280.webp
    ├── 8tdEa5C20Au0FA2Su1aBg2a2Dtry160S62ee2b90a4c9261c1df0f81e93304b252e33d_google-search-central-logo.png
    └── D0r0128tE0ySatF56S1aCa2B2uug2AdA62ee2b90a4f14364-3642224_clarity-ecommerce-logo-logo-e-commerce-png.png
├── l7-math.php
├── l22-oop-class.php
├── l8-string.php
├── l19-session-1.php
├── l15-superGlobal.php
├── l26.oop-types.php
├── l27-static-oop.php
├── header.php
├── l28-const.oop.php
├── l4.comment.php
├── l23-inheritenceClass.php
├── l29-stop-con-obj-oop.php
├── l25-con-des.php
├── l12trycatch.php
├── l16-getMethod.php
├── l30.abstract-oop.php
├── simplecrud
    ├── index.php
    ├── del.php
    ├── add.php
    └── up.php
├── l5-datatype.php
├── l10-function.php
├── l6-operators.php
├── l24-access-modifire.php
├── l21-revice.php
├── l11loop.php
├── l32-traits-oop.php
├── l31.interface-oop.php
├── l14-date.php
├── l18-file-upload.php
├── l34-connect-with-mysql.php
├── l9-condition.php
├── l33-sql-quries.php
├── l13-array.php
├── b76.sql
├── l17-form-1.php
├── l20-login-system.php
├── bac75.sql
└── l35-crud.php


/l2.variable.php:
--------------------------------------------------------------------------------
1 | <?php
2 |     $xyz = "this is a text";
3 | 
4 |     echo $xyz;
5 | 


--------------------------------------------------------------------------------
/l3.const.php:
--------------------------------------------------------------------------------
1 | <?php  
2 |     $x = 1234;
3 |     define("x", 123);
4 |     echo x;
5 | ?>


--------------------------------------------------------------------------------
/footer.php:
--------------------------------------------------------------------------------
1 |     <!-- this is a comment from footer -->
2 |     <h2>Amio bir moddhe</h2>
3 | </body>
4 | </html>


--------------------------------------------------------------------------------
/problem.js:
--------------------------------------------------------------------------------
1 | var n = prompt();
2 | if (n % 2 == 0 && n != 2) {
3 |   console.log("Yes");
4 | } else {
5 |   console.log("No");
6 | }
7 | 


--------------------------------------------------------------------------------
/l1-echo-print.php:
--------------------------------------------------------------------------------
1 | <?php 
2 |     echo "PHP", "Laravel";
3 |     echo "kamal";
4 |     echo "<h2>HTML</h2>";
5 |     print "eki kaaz korte paren";
6 |     


--------------------------------------------------------------------------------
/l19-session-2.php:
--------------------------------------------------------------------------------
1 | <?php  
2 |     session_start();
3 | 
4 |     echo $_SESSION['uName']." ".$_SESSION['uEmail'];
5 |     echo "<br>";
6 |     // echo $uName;
7 | ?>


--------------------------------------------------------------------------------
/problem.php:
--------------------------------------------------------------------------------
1 | <?php 
2 |     $w = (int) fgets(STDIN);
3 |     if($w % 2 == 0 && $w > 2){
4 |         echo "YES";
5 |     }else{
6 |         echo "NO";
7 |     }
8 | ?>


--------------------------------------------------------------------------------
/hw/Md Tazul islam/leapyear/image/Leap_Year_Algorithm.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/asif-daffodil/b76PHP/master/hw/Md Tazul islam/leapyear/image/Leap_Year_Algorithm.png


--------------------------------------------------------------------------------
/images/C82dABt026S0DyFr1uA5S12gt2aa0uEa62ee2b90a6ddddownload.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/asif-daffodil/b76PHP/master/images/C82dABt026S0DyFr1uA5S12gt2aa0uEa62ee2b90a6ddddownload.png


--------------------------------------------------------------------------------
/images/guB082E52Ay0Sad0CtDuA62aF1at1Sr262ee2b90a56cb1540267867863.jpg:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/asif-daffodil/b76PHP/master/images/guB082E52Ay0Sad0CtDuA62aF1at1Sr262ee2b90a56cb1540267867863.jpg


--------------------------------------------------------------------------------
/images/u2BFAgat25SC0aS0u211yEtA0a28d6rD62ee2b90a70adReact-icon.svg.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/asif-daffodil/b76PHP/master/images/u2BFAgat25SC0aS0u211yEtA0a28d6rD62ee2b90a70adReact-icon.svg.png


--------------------------------------------------------------------------------
/images/uD60tg58tu2aA2EAd2C11FaSySrB2a0062ee2b90a62dfblue-1343159_1280.webp:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/asif-daffodil/b76PHP/master/images/uD60tg58tu2aA2EAd2C11FaSySrB2a0062ee2b90a62dfblue-1343159_1280.webp


--------------------------------------------------------------------------------
/l7-math.php:
--------------------------------------------------------------------------------
1 | <?php
2 | echo max(5,10,110,3,312,56,-25)."<br>";
3 | echo min(5,10,110,3,312,56,-25)."<br>";
4 | echo abs(-25)."<br>";
5 | echo round(2.6)."<br>";
6 | echo floor(2.9)."<br>";
7 | echo ceil(2.1)."<br>";
8 | echo sqrt(81)."<br>";


--------------------------------------------------------------------------------
/l22-oop-class.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     class myClass {
 3 |         public $myPro = "Jamal Mia";
 4 |         public $yourPro = "Kamal Mia";
 5 |     }
 6 | 
 7 |     $obj = new myClass;
 8 | 
 9 |     echo $obj->myPro."<br>".$obj->yourPro;
10 | ?>


--------------------------------------------------------------------------------
/images/8tdEa5C20Au0FA2Su1aBg2a2Dtry160S62ee2b90a4c9261c1df0f81e93304b252e33d_google-search-central-logo.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/asif-daffodil/b76PHP/master/images/8tdEa5C20Au0FA2Su1aBg2a2Dtry160S62ee2b90a4c9261c1df0f81e93304b252e33d_google-search-central-logo.png


--------------------------------------------------------------------------------
/images/D0r0128tE0ySatF56S1aCa2B2uug2AdA62ee2b90a4f14364-3642224_clarity-ecommerce-logo-logo-e-commerce-png.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/asif-daffodil/b76PHP/master/images/D0r0128tE0ySatF56S1aCa2B2uug2AdA62ee2b90a4f14364-3642224_clarity-ecommerce-logo-logo-e-commerce-png.png


--------------------------------------------------------------------------------
/l8-string.php:
--------------------------------------------------------------------------------
1 | <?php
2 |     $x = "Ami valo achi";
3 |     echo strlen($x)."<br>";
4 |     echo str_word_count($x)."<br>";
5 |     echo strrev($x)."<br>";
6 |     echo strpos($x, "valo")."<br>";
7 |     echo str_replace("achi", "nai", $x)."<br>";
8 |     echo substr($x, 0, 8)."..."."<br>";


--------------------------------------------------------------------------------
/l19-session-1.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     session_start();
 3 | 
 4 |     $_SESSION['uName'] = "Asif Abir";
 5 |     $_SESSION['uEmail'] = "abir@dipti.com.bd";
 6 | 
 7 |     $uName = "The Rock"; 
 8 | 
 9 |     echo $_SESSION['uName']." ".$_SESSION['uEmail'];
10 |     echo "<br>";
11 |     echo $uName;
12 | ?>


--------------------------------------------------------------------------------
/l15-superGlobal.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | //GLOBALS
 3 | 
 4 | $x = "Shetu";
 5 | 
 6 | function myFunc()
 7 | {
 8 |     return $GLOBALS["x"];
 9 | }
10 | 
11 | echo myFunc() . "<br>";
12 | 
13 | 
14 | // $_SERVER[];
15 | echo "<pre>";
16 | print_r($_SERVER);
17 | echo "</pre>";
18 | 
19 | echo $_SERVER["PHP_SELF"] . "<br>";
20 | echo $_SERVER["REQUEST_METHOD"];
21 | 


--------------------------------------------------------------------------------
/l26.oop-types.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     class myClass
 3 |     {
 4 |         protected string $myName = "Aslam Mia"; 
 5 |         protected int $myIncome = 250;
 6 |         
 7 |         public function myFunc() : int
 8 |         {
 9 |             return 1000;
10 |         }
11 |     }
12 | 
13 |     $obj = new myClass;
14 |     echo $obj->myFunc();
15 | ?>


--------------------------------------------------------------------------------
/l27-static-oop.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     class myClass
 3 |     {
 4 |         private static string $name = "Mir Jafor";
 5 | 
 6 |         public static function myFunc () : string
 7 |         {
 8 |             return myClass::$name;    
 9 |         }
10 |     }
11 | 
12 |     $obj = new myClass;
13 |     // echo myClass::$name;
14 |     echo $obj->myFunc();
15 | ?>


--------------------------------------------------------------------------------
/header.php:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 | <head>
 4 |     <meta charset="UTF-8">
 5 |     <meta http-equiv="X-UA-Compatible" content="IE=edge">
 6 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 7 |     <title>Document</title>
 8 |     <!-- this is a comment from header -->
 9 | </head>
10 | <body>
11 |     <h2>Ai Bodir moddhe</h2>


--------------------------------------------------------------------------------
/l28-const.oop.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     final class myClass
 3 |     {
 4 |         public const myCon = "This is a text";
 5 |         protected static string $myPro = "Hello World";
 6 | 
 7 |         public function myFunc () :string
 8 |         {
 9 |             myClass::$myPro = "Ekti Bangladesh";
10 |             return myClass::$myPro;
11 |         }
12 |     }
13 | 
14 |     $obj = new myClass;
15 |     echo myClass::myCon;
16 | ?>


--------------------------------------------------------------------------------
/l4.comment.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     // this is a single line comment
 3 |     "This is a php code";
 4 |     # this is also a single line comment
 5 |     "This is also a php code";
 6 |     /*
 7 |         this is a
 8 |         multile
 9 |         comment
10 |     */
11 |     "This is also a php code";
12 |     /**
13 |      * ha ha ha
14 |      * ho ho ho
15 |      * he he he
16 |      * hi hi hi
17 |      * hu hu hu
18 |      */
19 | ?>


--------------------------------------------------------------------------------
/l23-inheritenceClass.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     class dada{
 3 |         public $amGach = 20000;
 4 |     }
 5 | 
 6 |     class baba extends dada {
 7 |         public function myBaba () {
 8 |             return $this->amGach;
 9 |         }
10 |     }
11 | 
12 |     class ami extends baba {
13 |         public function shudhuAmar () {
14 |             return $this->myBaba ();
15 |         }
16 |     }
17 | 
18 |     $obj = new ami;
19 |     echo $obj->shudhuAmar();
20 | ?>


--------------------------------------------------------------------------------
/l29-stop-con-obj-oop.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     final class myClass
 3 |     {
 4 |         protected static string $personName = "Amir Khan";
 5 | 
 6 |         private function __construct()
 7 |         {
 8 |             return false;
 9 |         }
10 | 
11 |         public static function personName () : string
12 |         {
13 |             return myClass::$personName;
14 |         }
15 |     }
16 | 
17 |     // $obj = new myClass;
18 |     echo myClass::personName();
19 | ?>


--------------------------------------------------------------------------------
/l25-con-des.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     class myClass
 3 |     {
 4 |         protected $myPro = "Amar Property";
 5 |         public function __construct()
 6 |         {
 7 |             echo "Amar Bangladesh";
 8 |         }
 9 |         public function myFunc()
10 |         {
11 |             return $this->myPro;
12 |         }
13 |         public function __destruct()
14 |         {
15 |             echo "<br>Amar Ami";
16 |         }
17 |     }
18 |     $obj = new myClass;
19 |     echo "<br>".$obj->myFunc();
20 | ?>


--------------------------------------------------------------------------------
/l12trycatch.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | //create function with an exception
 3 | function checkNum($number) {
 4 |   if($number>1) {
 5 |     throw new Exception("Value must be 1 or below");
 6 |   }
 7 |   return true;
 8 | }
 9 | 
10 | //trigger exception in a "try" block
11 | try {
12 |   checkNum(2);
13 |   //If the exception is thrown, this text will not be shown
14 |   echo 'If you see this, the number is 1 or below';
15 | }
16 | 
17 | //catch exception
18 | catch(Exception $e) {
19 |   echo 'Message: ' .$e->getMessage();
20 | }
21 | ?>


--------------------------------------------------------------------------------
/l16-getMethod.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | $pageNo = $_GET['page'] ?? 1;
 3 | $currentPage = basename($_SERVER['PHP_SELF']);
 4 | echo "Page No : $pageNo <br>";
 5 | ?>
 6 | <a href="<?= $currentPage . "?page=1" ?>">
 7 |     <button>1</button>
 8 | </a>
 9 | <a href="<?= $currentPage . "?page=2" ?>">
10 |     <button>2</button>
11 | </a>
12 | <a href="<?= $currentPage . "?page=3" ?>">
13 |     <button>3</button>
14 | </a>
15 | <a href="<?= $currentPage . "?page=4" ?>">
16 |     <button>4</button>
17 | </a>
18 | <a href="<?= $currentPage . "?page=5" ?>">
19 |     <button>5</button>
20 | </a>


--------------------------------------------------------------------------------
/hw/Md Tazul islam/leapyear/leapyear.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | 
 4 | function checkYear($year)
 5 | {
 6 |     if (gettype($year) != "integer") {
 7 |         echo "Invalid Input, Write a year in number like 2022 or 2024!" . "<br>";
 8 |     } elseif ($year % 4 != 0) {
 9 | 
10 |         echo "$year is not a leap year.";
11 |     } else if ($year % 100 != 0) {
12 |         echo "$year is a leap year.";
13 |     } else if ($year % 400 == 0) {
14 |         echo "$year is a leap year.";
15 |     } else {
16 |         echo "$year is not a leap year.";
17 |     }
18 | }
19 | 
20 | checkYear(2003);
21 | 


--------------------------------------------------------------------------------
/l30.abstract-oop.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     abstract class myClass
 3 |     {
 4 |         protected string $name;
 5 | 
 6 |         public function __construct(string $name)
 7 |         {
 8 |             return $this->name = $name;
 9 |         }
10 | 
11 |         abstract protected function myFunc() : string;
12 |     }
13 | 
14 |     class myChiled extends myClass 
15 |     {
16 |         public function myFunc(): string
17 |         {
18 |             return $this->name;
19 |         }
20 |     }
21 | 
22 |     $myChiled = new myChiled("Joy Bangla");
23 |     echo $myChiled->myFunc();
24 | ?>


--------------------------------------------------------------------------------
/hw/Mahmudunnabi/Mahmudunnabi/leap_year.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | //Make a function that takes a year as argument and returns that the year is leap-year or not
 4 | 
 5 | function isLeapYear($year)
 6 | {
 7 |     if (!is_numeric($year)) {
 8 |         echo "String is not allowed. Input should be a number.";
 9 |         return;
10 |     }
11 |     // check leap year
12 |     if (($year % 4 == 0 && $year % 100 != 0) || $year % 400 == 0) {
13 |         echo $year, "is a leap year";
14 |     } else {
15 |         echo $year, " is not a leap year";
16 |     }
17 | }
18 | 
19 | $year = "1900";
20 | isLeapYear($year);
21 | 


--------------------------------------------------------------------------------
/simplecrud/index.php:
--------------------------------------------------------------------------------
 1 | <ul>
 2 |     <li><a href="index.php">All Student</a></li>
 3 |     <li><a href="add.php">Add Student</a></li>
 4 | </ul>
 5 | 
 6 | <?php
 7 | $conn = mysqli_connect("localhost", "root", "", "b76simplecrud");
 8 | $select = $conn->query("SELECT * FROM `students`");
 9 | if ($select->num_rows > 0) {
10 |     echo "<ul>";
11 |     while ($data = $select->fetch_object()) {
12 |         echo "<li>Name : $data->name, City : $data->city <a href='up.php?id=$data->id'><button>Update</button></a> <a href='del.php?id=$data->id'><button>Delete</button></a></li>";
13 |     }
14 |     echo "</ul>";
15 | }
16 | ?>


--------------------------------------------------------------------------------
/l5-datatype.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 |     $x = "ha ha ha";
 3 |     var_dump($x);
 4 |     echo "<br>";
 5 |     
 6 |     $x = 123;
 7 |     var_dump($x);
 8 |     echo "<br>";
 9 | 
10 |     $x = 123.456;
11 |     var_dump($x);
12 |     echo "<br>";
13 | 
14 |     $x = true;
15 |     var_dump($x);
16 |     echo "<br>";
17 | 
18 |     $x = null;
19 |     var_dump($x);
20 |     echo "<br>";
21 | 
22 |     $x = ["Shopno", "Podma", "Shetu"];
23 |     var_dump($x);
24 |     echo "<br>";
25 | 
26 |     class abul {
27 |         public $babul = "Kabul";
28 |     }
29 | 
30 |     $x = new abul;
31 |     var_dump($x);
32 |     echo "<br>";
33 | 
34 |     


--------------------------------------------------------------------------------
/l10-function.php:
--------------------------------------------------------------------------------
 1 | <?php 
 2 |     $x = 50;
 3 |     function dhaka ($y) {
 4 |         // return $GLOBALS['x'];
 5 |         return $y;
 6 |     }
 7 | 
 8 | 
 9 |     echo dhaka("Bangladesh")."<br>";
10 |     echo dhaka("USA")."<br>";
11 |     echo dhaka($x)."<br>";
12 | 
13 |     function multiPera ($pera1 = "Ananta", $pera2 = "Jalil") {
14 |         return  $pera1." ".$pera2;
15 |     }
16 | 
17 |     echo multiPera("Hero", "Alom")."<br>";
18 |     echo multiPera()."<br>";
19 |     echo multiPera("Hero")."<br>";
20 |     echo multiPera(pera2:"Hero", pera1:"Nazmul")."<br>";
21 | 
22 |     $myFunc = fn($msg) => $msg;
23 | 
24 |     echo $myFunc("Alhadulillah");
25 | ?>


--------------------------------------------------------------------------------
/l6-operators.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 |     /**Arethmetic operators
 3 |      * +
 4 |      * -
 5 |      * *
 6 |      * /
 7 |      * %
 8 |      * **
 9 |      */
10 | 
11 |     /**Assignment operator
12 |      * = 
13 |      * +=
14 |      * -=
15 |      * *=
16 |      * /=
17 |      * %=
18 |      */
19 | 
20 |     /**Increment/decrement operator
21 |      * ++
22 |      * --
23 |      */
24 | 
25 |     /**Concatenation operators
26 |      * .
27 |      * .=
28 |      */
29 | 
30 |     /**Comparison operator 
31 |      * ==
32 |      * ===
33 |      * <
34 |      * >
35 |      * <=
36 |      * >=
37 |      * !=
38 |      * !==
39 |      * <>
40 |      */ 
41 | 
42 |     /**Conditional operator
43 |      *  &&
44 |      *  ||
45 |      *  and
46 |      *  or
47 |      *  !
48 |      *  xor
49 |      */ 


--------------------------------------------------------------------------------
/l24-access-modifire.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 |     class myClass
 4 |     {
 5 |         public $myProperty = "For All";
 6 |         protected $myOtherProperty = "Only for my family";
 7 |         private $onliMine = "Amar Ami";
 8 | 
 9 |         public function myFunc ()
10 |         {
11 |             return $this->myProperty."<br>".$this->myOtherProperty."<br>".$this->onliMine;
12 |         }
13 |     }
14 | 
15 |     class myChield extends myClass
16 |     {
17 |         public function myChieldFunc ()
18 |         {
19 |             return $this->myProperty."<br>".$this->myOtherProperty."<br>";
20 |         }
21 |     }
22 | 
23 |     $myObj = new myClass;
24 |     echo $myObj->myProperty."<br>";
25 |     // echo $myObj->myOtherProperty;
26 |     echo $myObj->myFunc();
27 | 
28 |     $myChieldObj = new myChield;
29 |     echo $myChieldObj->myChieldFunc();
30 | 
31 | ?>


--------------------------------------------------------------------------------
/l21-revice.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     include_once("./header.php")
 3 | ?>
 4 | 
 5 | <?php 
 6 |     $age = 15;
 7 |     if($age < 10){
 8 | ?>
 9 |     <b>Hello World</b>
10 | <?php  
11 |     }
12 | ?>
13 | 
14 | <?php  
15 |     // $fileName = basename($_SERVER['PHP_SELF']);
16 |     // echo $_GET["name"] ?? header("location: $fileName?name=Asif");
17 | ?>
18 | 
19 | <?php  
20 |     if(isset($_POST['sub123'])){
21 |        $uname = $_POST['uname'];
22 |        if(empty($uname)){
23 |             $errUname = "Please write your name";
24 |        }elseif(strlen($uname) < 3){
25 |             $errUname = "Very small name";
26 |        }else{
27 |         $crrUname = $uname;
28 |         $uname = null;
29 |        }
30 |     }
31 | ?>
32 | 
33 | <form action="" method="post">
34 |     <input type="text" placeholder="Your Name" name="uname" value="<?= $uname ?? null ?>">
35 |     <input type="submit" value="Sign Up" name="sub123">
36 | </form>
37 | 
38 | <?= $errUname ?? $crrUname ?? null ?>
39 | 
40 | <?php  
41 |     include_once("./footer.php")
42 | ?>


--------------------------------------------------------------------------------
/simplecrud/del.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | $conn = mysqli_connect("localhost", "root", "", "b76simplecrud");
 3 | if (!isset($_GET['id'])) {
 4 |     header("location: index.php");
 5 | } else {
 6 |     $id = $_GET['id'];
 7 |     $check = $conn->query("SELECT * FROM `students` WHERE `id` = $id");
 8 |     if ($check->num_rows == 0) {
 9 |         header("location: index.php");
10 |     } else {
11 | ?>
12 |         <h2>Do you realy want to delete student?</h2>
13 |         <a href="index.php"><button>No</button></a>
14 |         <form action="" method="post" style="display: inline;">
15 |             <button type="submit" name="del123">Yes</button>
16 |         </form>
17 | <?php
18 |     }
19 | }
20 | 
21 | if (isset($_POST['del123'])) {
22 |     $del = $conn->query("DELETE FROM `students` WHERE `id` = $id");
23 |     if ($del) {
24 |         echo "<script>alert('student deleted successfully');location.href='index.php'</script>";
25 |     } else {
26 |         echo "<script>alert('something went wrong');location.href='index.php'</script>";
27 |     }
28 | }
29 | 


--------------------------------------------------------------------------------
/simplecrud/add.php:
--------------------------------------------------------------------------------
 1 | <ul>
 2 |     <li><a href="index.php">All Student</a></li>
 3 |     <li><a href="add.php">Add Student</a></li>
 4 | </ul>
 5 | 
 6 | <form action="" method="post">
 7 |     <input type="text" placeholder="Student Name" name="sname">
 8 |     <input type="text" placeholder="Student City" name="scity">
 9 |     <input type="submit" value="Add Student" name="sub123">
10 | </form>
11 | 
12 | <?php
13 | $conn = mysqli_connect("localhost", "root", "", "b76simplecrud");
14 | function safuda($data)
15 | {
16 |     $data = htmlspecialchars($data);
17 |     $data = trim($data);
18 |     $data = stripslashes($data);
19 |     return $data;
20 | }
21 | if (isset($_POST['sub123'])) {
22 |     $sname = safuda($conn->real_escape_string($_POST['sname']));
23 |     $scity = safuda($conn->real_escape_string($_POST['scity']));
24 |     if (!empty($sname) && !empty($scity)) {
25 |         $insert = $conn->query("INSERT INTO `students` (`name`, `city`) VALUES ('$sname', '$scity')");
26 |         if ($insert) {
27 |             header("location: index.php");
28 |         }
29 |     }
30 | }
31 | 
32 | ?>


--------------------------------------------------------------------------------
/l11loop.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     // while loop
 3 |     $startPoint = 0;
 4 |     while ($startPoint < 10) {
 5 |         echo $startPoint." ";
 6 |         $startPoint++;
 7 |     }
 8 |     echo "<br>";
 9 | 
10 |     $startPoint = 9;
11 |     while ($startPoint >= 0) {
12 |         echo $startPoint." ";
13 |         $startPoint--;
14 |     }
15 | 
16 |     $gunok = 2;
17 |     $gunitok = 1;
18 |     while ($gunitok <= 10){
19 |         echo $gunok." x ".$gunitok." = ".($gunok * $gunitok)."<br>";
20 |         $gunitok++;
21 |     }
22 | 
23 |     for ($i=0; $i < 10; $i++) { 
24 |         echo $i." ";
25 |     }
26 |     echo "<br>";
27 | 
28 |     for ($j=2; $j <= 100; $j += 2) { 
29 |         echo $j." ";
30 |     }
31 |     echo "<br>";
32 |     for ($k=1; $k <= 100; $k++) { 
33 |         echo ($k % 7 === 0)? $k." ":null;
34 |     }
35 |     echo "<br>";
36 |     $count = 0;
37 |     for ($l=1; $l <= 100; $l++) { 
38 |         if($l % 13 === 0){
39 |             $count++;
40 |         }
41 |     }
42 |     echo $count."<br>";
43 | 
44 |     $x = 15;
45 |     do{
46 |         echo $x;
47 |         $x++;
48 |     }while ($x < 10)
49 | ?>


--------------------------------------------------------------------------------
/l32-traits-oop.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     trait myTrait {
 3 |         protected function myFunc1 (string $data) : string  
 4 |         {
 5 |             return $data;
 6 |         }
 7 | 
 8 |         protected function myFunc2 (string $data) : string  
 9 |         {
10 |             return $data;
11 |         }
12 |     }
13 | 
14 |     interface myInterface {
15 |         public function myFunc3 (): string;
16 |     }
17 | 
18 |     abstract class myClass implements myInterface
19 |     {
20 |         use myTrait;
21 |         
22 |         protected string $myPro;
23 |         protected string $title;
24 | 
25 |         public function __construct(string $data)
26 |         {
27 |             $this->title = $data;
28 |         }
29 | 
30 |         public function myFunc3 (): string
31 |         {
32 |             $this->myPro = $this->myFunc1("Asif")." ".$this->myFunc2("Abir"); $this->myPro;
33 |             return $this->title.": ".$this->myPro;
34 |         }
35 | 
36 |         public abstract function myFunc4(): string;
37 |     }
38 | 
39 |     class myChield extends myClass
40 |     {
41 |         public function myFunc4(): string
42 |         {
43 |             return $this->myFunc3();
44 |         }
45 |     }
46 | 
47 |     $myChield = new myChield("Name");
48 |     echo $myChield->myFunc4();
49 | ?>


--------------------------------------------------------------------------------
/l31.interface-oop.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     interface personInfo {
 3 |         public function personName () : string;
 4 |         public function personAge () : int;
 5 |     }
 6 | 
 7 |     class myClass implements personInfo
 8 |     {
 9 |         protected string $name;
10 |         protected int $age;
11 |         public function __construct(string $name = "", int $age)
12 |         {
13 |             $this->name = $name;
14 |             $this->age = $age;
15 |         }
16 | 
17 |         public function personName () : string
18 |         {
19 |             return $this->name;
20 |         }
21 | 
22 |         public function personAge () : int
23 |         {
24 |             return $this->age;
25 |         }
26 |     }
27 | 
28 |     class myChild extends myClass implements personInfo
29 |     {
30 |         public function personAge () : int
31 |         {
32 |             return $this->age;
33 |         }
34 | 
35 |         public function personName(): string
36 |         {
37 |             return "Asif";
38 |         }
39 |     }
40 | 
41 |     $myClass = new myClass("Tazul Vai", 42);
42 |     echo "Person name is : ".$myClass->personName()." and person age is ".$myClass->personAge()."<br>";
43 | 
44 |     $myChild = new myChild(age:420);
45 |     echo $myChild->personAge()." ".$myChild->personName();
46 | ?>


--------------------------------------------------------------------------------
/l14-date.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | echo date("d-m-y") . "<br>";
 3 | echo date("d/m/y") . "<br>";
 4 | echo date("d/M/y") . "<br>";
 5 | date_default_timezone_set("Asia/Dhaka");
 6 | echo date_default_timezone_get() . "<br>";
 7 | echo date("d/F/Y h:i:s a") . "<br>";
 8 | echo date("d/F/Y H:i:s") . "<br>";
 9 | echo date("d/F/Y h:i:s A") . "<br>";
10 | echo date("d/F/Y h:i:s A D") . "<br>";
11 | echo date("d/F/Y h:i:s A l") . "<br>";
12 | 
13 | //mktime
14 | // hour minute second month day year
15 | 
16 | $myTime = mktime(15, 39, 47, 9, 12, 2009);
17 | echo date("d/F/Y h:i:s A l", $myTime) . "<br>";
18 | $myTime2 = mktime(0, 0, 0, 5, 5, 2015);
19 | echo date("d/F/Y h:i:s A l", $myTime2) . "<br>";
20 | 
21 | //strtotime
22 | 
23 | $nextFriday = strtotime("next friday");
24 | echo date("d/F/Y h:i:s A l", $nextFriday) . "<br>";
25 | 
26 | $nextday = strtotime("tomorrow");
27 | echo date("d/F/Y h:i:s A l", $nextday) . "<br>";
28 | 
29 | $previousDay = strtotime("yesterday");
30 | echo date("d/F/Y h:i:s A l", $previousDay) . "<br>";
31 | 
32 | $myDate = strtotime("-2 years +3 month -1 week +2 days");
33 | echo date("d/F/Y h:i:s A l", $myDate) . "<br>";
34 | 
35 | $startDate = strtotime("next friday");
36 | $endDate = strtotime("+6 weeks", $startDate);
37 | 
38 | while ($startDate <= $endDate) {
39 |     echo date("d/F/Y l", $startDate) . "<br>";
40 |     $startDate = strtotime("+1 weeks", $startDate);
41 | }
42 | 


--------------------------------------------------------------------------------
/l18-file-upload.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     if ($_SERVER['REQUEST_METHOD'] === 'POST') {
 3 |         $fName = $_FILES['myFile']['name'];
 4 |         $tmpName = $_FILES['myFile']['tmp_name'];
 5 |         if(empty($fName[0])){
 6 |             echo "<script>alert('Please choose a file')</script>";
 7 |         }else{
 8 |             for ($i=0; $i < count($fName); $i++) { 
 9 |                 if(!getimagesize($tmpName[$i])){
10 |                 echo "<script>alert('Invalid image file')</script>";
11 |                 }else{ 
12 |                     if (!is_dir("images")) {
13 |                         mkdir("images");
14 |                     }
15 |                     $alfa = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
16 |                     $direction = "images/".str_shuffle(substr($alfa, 0, 6).date("hisMdYDl")).uniqid().$fName[$i];
17 |                     $move = move_uploaded_file($tmpName[$i], $direction);
18 |                     if(!$move){
19 |                         echo "<script>alert('Image upload problem')</script>";
20 |                     }else{
21 |                     echo "<script>alert('Image upload successfully')</script>"; 
22 |                     }
23 |                 }
24 |             }
25 |         }
26 |     }
27 | ?>
28 | <form action="" method="post" enctype="multipart/form-data" >
29 |     <input type="file" name="myFile[]" multiple>
30 |     <input type="submit" value="Upload File">
31 | </form>


--------------------------------------------------------------------------------
/l34-connect-with-mysql.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     
 3 |     $conn = mysqli_connect("localhost", "root", null, "b76crud");
 4 |     // echo !$conn ? "Something went wrong":"Kaaz hoise"; 
 5 |     $allData = $conn->query("SELECT * FROM `students`")
 6 |    
 7 | 
 8 |     /* final class db {
 9 |         private static string $host = "localhost";
10 |         private static string $user = "root";
11 |         private static $pass = null;
12 |         private static string $schema = "b76crud";
13 |         private static object $conn;
14 | 
15 |         private function __construct()
16 |         {
17 |             return;
18 |         }
19 | 
20 |         public static function dbConn (): object
21 |         {
22 |             db::$conn = mysqli_connect(db::$host, db::$user, db::$pass, db::$schema);
23 |             return db::$conn;
24 |         }
25 | 
26 |         public static function getData ($q) : object
27 |         {
28 |             return db::dbConn()->query($q);
29 |         }
30 |     }
31 |     $query = "SELECT * FROM `students`";
32 |     $allData = db::getData($query); */
33 | ?>
34 | 
35 | <table>
36 |     <tr>
37 |         <td>Name</td>
38 |         <td>City</td>
39 |     </tr>
40 |     <?php  
41 |         while ($data = $allData->fetch_object()) {
42 |     ?>
43 |         <tr>
44 |             <td><?= $data->name ?></td>
45 |             <td><?= $data->city ?></td>
46 |         </tr>
47 |     <?php
48 |         }
49 |     ?>
50 | </table>
51 | 


--------------------------------------------------------------------------------
/simplecrud/up.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | $conn = mysqli_connect("localhost", "root", "", "b76simplecrud");
 3 | if (!isset($_GET['id'])) {
 4 |     header("location: index.php");
 5 | } else {
 6 |     $id = $_GET['id'];
 7 |     $check = $conn->query("SELECT * FROM `students` WHERE `id` = $id");
 8 |     if ($check->num_rows == 0) {
 9 |         header("location: index.php");
10 |     } else {
11 |         $preData = $check->fetch_object();
12 |     }
13 | }
14 | 
15 | function safuda($data)
16 | {
17 |     $data = htmlspecialchars($data);
18 |     $data = trim($data);
19 |     $data = stripslashes($data);
20 |     return $data;
21 | }
22 | if (isset($_POST['up123'])) {
23 |     $sname = safuda($conn->real_escape_string($_POST['sname']));
24 |     $scity = safuda($conn->real_escape_string($_POST['scity']));
25 |     if (!empty($sname) && !empty($scity)) {
26 |         $update = $conn->query("UPDATE `students` SET `name` = '$sname', `city` = '$scity' WHERE `id` =  $id");
27 |         if ($update) {
28 |             echo "<script>alert('student updated successfully');location.href='index.php'</script>";
29 |         } else {
30 |             echo "<script>alert('something went wrong');location.href='index.php'</script>";
31 |         }
32 |     }
33 | }
34 | ?>
35 | <h2>Update Student Data</h2>
36 | <form action="" method="post">
37 |     <input type="text" placeholder="Student Name" name="sname" value="<?= $sname ?? $preData->name ?? null ?>">
38 |     <input type="text" placeholder="Student City" name="scity" value="<?= $scity ?? $preData->city ?? null ?>">
39 |     <input type="submit" value="Update Student" name="up123">
40 | </form>


--------------------------------------------------------------------------------
/l9-condition.php:
--------------------------------------------------------------------------------
 1 | <?php  
 2 |     $age = 5;
 3 | 
 4 |     if($age < 13 && $age > 0){
 5 |         echo "You are a baby";
 6 |     }elseif($age < 20 && $age >= 13){
 7 |         echo "You are a teeanger";
 8 |     }elseif($age < 30 && $age >= 20){
 9 |         echo "You are a a young person";
10 |     }elseif($age < 50 && $age >= 30){
11 |         echo "You are a middle age person";
12 |     }elseif($age >= 50 && $age < 150){
13 |         echo "You are an old person";
14 |     }else{
15 |         echo "Sorry! you are not in this world!";
16 |     }
17 | 
18 |     echo "<br>";
19 | 
20 |     // $city = "Kolkata";
21 | 
22 |     switch ($age) {
23 |         case ($age < 13 && $age > 0):
24 |             echo "Dhaka ekhon faka";
25 |             break;
26 |         case ($age < 20 && $age >= 13):
27 |             echo "Dhaka ekhon faka";
28 |             break;
29 |         case ($age < 30 && $age >= 20):
30 |             echo "Dhaka ekhon faka";
31 |             break;
32 |         case ($age < 50 && $age >= 30):
33 |             echo "Dhaka ekhon faka";
34 |             break;
35 |         case ($age >= 50 && $age < 150):
36 |             echo "Dhaka ekhon faka";
37 |             break;
38 |         
39 |         default:
40 |             echo "Podda shetu diye ghure ashlam!";
41 |             break;
42 |     }
43 | 
44 |     echo "<br>";
45 | 
46 |     $x = 10;
47 | 
48 |     // if($x < 12){
49 |     //     echo "halum";
50 |     // }else{
51 |     //     echo "ha ha";
52 |     // }
53 |     echo ($x < 8)? "halum":"ha ha";
54 | 
55 |      echo "<br>";
56 |     // if(isset($x)){
57 |     //     echo $x;
58 |     // }else{
59 |     //     echo 8;
60 |     // }
61 |     // echo (isset($x))? $x:8;
62 | 
63 |     echo $y ?? null;
64 | ?>


--------------------------------------------------------------------------------
/l33-sql-quries.php:
--------------------------------------------------------------------------------
 1 | CREATE DATABASE `My Data`
 2 | 
 3 | DROP DATABASE `My Data`
 4 | 
 5 | CREATE TABLE `my table` (
 6 |     `id` INT(11) NOT NULL AUTO_INCREMENT,
 7 |     `name` CHAR(100),
 8 |     `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
 9 |     PRIMARY KEY (`id`) 
10 | )
11 | 
12 | INSERT INTO `my table`(`name`) VALUES ('Asif')
13 | 
14 | INSERT INTO `my table`(`name`) VALUES ('Abir'), ('Mahamudunnobi'), ('Tazul'), ('Shakil')
15 | ALTER TABLE `my table` ADD `city` CHAR(100) AFTER `name`
16 | 
17 | ALTER TABLE `my table` DROP`city`
18 | 
19 | UPDATE `my table` SET `city` = 'Dhaka' WHERE `id` = 1
20 | 
21 | DELETE FROM `my table` WHERE `id` = 5
22 | 
23 | SELECT * FROM `my table`
24 | 
25 | SELECT `name` FROM `my table`
26 | 
27 | SELECT `name`, `city` FROM `my table`
28 | 
29 | SELECT `my table`.`name`, `my table`.`city` FROM `my table`
30 | 
31 | ALTER TABLE `my table` ADD FOREIGN KEY (`std_id`) REFERENCES `b76`.`students`(`id`) ON DELETE RESTRICT ON UPDATE RESTRICT;
32 | 
33 | SELECT `my table`.`name` AS 'Father' FROM `my table`
34 | 
35 | SELECT `my data`.`my table`.`name` AS 'Father' FROM `my table`
36 | 
37 | SELECT `my data`.`my table`.`name` AS 'Father', `my data`.`my table`.`city` AS 'Father City', `b76`.`students`.`name` AS 'Chield Name', `b76`.`students`.`gender` FROM `my data`.`my table` INNER JOIN `b76`.`students` ON  `my data`.`my table`.`std_id` = `b76`.`students`.`id`
38 | 
39 | SELECT * FROM `students` WHERE `name` = 'Kamal' AND `city` = 'Dhaka'
40 | 
41 | SELECT * FROM `students` WHERE `name` = 'Kamal' OR `city` = 'Dhaka'
42 | 
43 | SELECT * FROM `students` WHERE `name` LIKE '%ir'
44 | 
45 | SELECT * FROM `students` WHERE `name` LIKE 'as%'
46 | 
47 | SELECT * FROM `students` WHERE `name` LIKE '%khan%'
48 | 
49 | SELECT * FROM `students` WHERE `name` LIKE '%mal%' OR `city` LIKE '%mal%'
50 | 
51 | 


--------------------------------------------------------------------------------
/l13-array.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | // indexed array
 3 | // $city = array("Dhaka", "Rajshahi", "khulna", "Rongpur");
 4 | $city = ["Dhaka", "Rajshahi", "khulna", "Rongpur", "Joypurhat"];
 5 | 
 6 | // echo $city;
 7 | 
 8 | var_dump($city);
 9 | 
10 | echo "<br>" . $city[0] . "<br>";
11 | 
12 | echo "<pre>";
13 | print_r($city);
14 | echo "</pre>";
15 | 
16 | echo $city[0] . ", " . $city[1] . ", " . $city[2] . ", " . $city[3] . "<br>";
17 | 
18 | echo count($city) . "<br>";
19 | 
20 | for ($i = 0; $i < count($city); $i++) {
21 |     $koma = ($i === count($city) - 1) ? "<br>" : ", ";
22 |     echo $city[$i] .  $koma;
23 | }
24 | 
25 | $i = 0;
26 | foreach ($city as $ct) {
27 |     $koma = ($i === count($city) - 1) ? "<br>" : ", ";
28 |     echo $ct . $koma;
29 |     $i++;
30 | }
31 | 
32 | //Associative array
33 | $personInfo = ["name" => "Asif Abir", "city" => "Dhaka", "Gender" => "Male"];
34 | echo "<pre>";
35 | var_dump($personInfo);
36 | echo "</pre>";
37 | echo "<pre>";
38 | print_r($personInfo);
39 | echo "</pre>";
40 | echo "Name : " . $personInfo["name"] . ", City : " . $personInfo["city"] . ", Gender : " . $personInfo["Gender"] . "<br>";
41 | 
42 | foreach ($personInfo as $key => $val) {
43 |     echo ucwords($key) . " : " . $val . "<br>";
44 | }
45 | 
46 | 
47 | //Multidimntional array
48 | $bd = [["Kamal", "Jamal", "Tomal", "Akmal"], ["Dhaka", "Cumilla", "Chittagong", "Cox Bazar"], [25, 35, 45, 55]];
49 | 
50 | echo "<pre>";
51 | print_r($bd);
52 | echo "</pre>";
53 | 
54 | foreach ($bd as $data) {
55 |     foreach ($data as $val) {
56 |         echo $val . " ";
57 |     }
58 |     echo "<br>";
59 | }
60 | 
61 | for ($i = 0; $i < count($bd); $i++) {
62 |     for ($j = 0; $j < count($bd[$i]); $j++) {
63 |         echo $bd[$i][$j] . " ";
64 |     }
65 |     echo "<br>";
66 | }
67 | 
68 | echo $bd[0][1] . "<br>";
69 | 
70 | $persons = [
71 |     "names" => ["Abul", "Babul", "Kabul", "Mokbul", "Bulbul"],
72 |     "cities" => ["Dhaka", "Chadpur", "Bandarban", "Dinajour", "Pirojpur"],
73 |     "ages" => [10, 12, 6, 60, 35]
74 | ];
75 | 
76 | $text = [" lives in", " and his age is ", "."];
77 | foreach ($persons as $person) {
78 |     foreach ($person as $info) {
79 |         echo $info . " ";
80 |     }
81 |     echo "<br>";
82 | }
83 | 
84 | $totalData = count($persons["names"]);
85 | 
86 | for ($i = 0; $i < $totalData; $i++) {
87 |     echo $persons["names"][$i] . $text[0] . $persons["cities"][$i] . $text[1] . $persons["ages"][$i] . $text[2] . "<br>";
88 | }
89 | 


--------------------------------------------------------------------------------
/b76.sql:
--------------------------------------------------------------------------------
 1 | -- phpMyAdmin SQL Dump
 2 | -- version 5.1.0
 3 | -- https://www.phpmyadmin.net/
 4 | --
 5 | -- Host: 127.0.0.1
 6 | -- Generation Time: Sep 01, 2022 at 10:19 AM
 7 | -- Server version: 10.4.18-MariaDB
 8 | -- PHP Version: 8.0.3
 9 | 
10 | SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
11 | START TRANSACTION;
12 | SET time_zone = "+00:00";
13 | 
14 | 
15 | /*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
16 | /*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
17 | /*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
18 | /*!40101 SET NAMES utf8mb4 */;
19 | 
20 | --
21 | -- Database: `b76`
22 | --
23 | 
24 | -- --------------------------------------------------------
25 | 
26 | --
27 | -- Table structure for table `students`
28 | --
29 | 
30 | CREATE TABLE `students` (
31 |   `id` int(11) NOT NULL,
32 |   `name` char(255) NOT NULL,
33 |   `gender` char(100) NOT NULL,
34 |   `dob` date NOT NULL,
35 |   `religion` char(100) NOT NULL,
36 |   `city` char(150) NOT NULL,
37 |   `created_at` timestamp NOT NULL DEFAULT current_timestamp()
38 | ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
39 | 
40 | --
41 | -- Dumping data for table `students`
42 | --
43 | 
44 | INSERT INTO `students` (`id`, `name`, `gender`, `dob`, `religion`, `city`, `created_at`) VALUES
45 | (1, 'Mushfiq Sir', 'Male', '2000-01-03', 'Islam', 'Dhaka', '2022-08-29 09:06:06'),
46 | (2, 'Kamal', 'Male', '0000-00-00', 'Islam', 'Chuyadanga', '2022-08-29 09:08:23'),
47 | (6, 'Aslam Khan', 'Male', '2000-10-09', 'Islam', 'Dhaka', '2022-09-01 07:10:45'),
48 | (7, 'Kamal', 'Male', '2022-01-02', 'Islam', 'Dhaka', '2022-09-01 07:38:08'),
49 | (8, 'Jamal Mia', 'Male', '2022-06-15', 'Islam', 'Dhaka', '2022-09-01 07:38:08');
50 | 
51 | -- --------------------------------------------------------
52 | 
53 | --
54 | -- Table structure for table `teachers`
55 | --
56 | 
57 | CREATE TABLE `teachers` (
58 |   `id` int(11) NOT NULL,
59 |   `name` char(100) DEFAULT NULL,
60 |   `subject` char(100) DEFAULT NULL,
61 |   `created_at` timestamp NOT NULL DEFAULT current_timestamp()
62 | ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
63 | 
64 | --
65 | -- Indexes for dumped tables
66 | --
67 | 
68 | --
69 | -- Indexes for table `students`
70 | --
71 | ALTER TABLE `students`
72 |   ADD PRIMARY KEY (`id`);
73 | 
74 | --
75 | -- Indexes for table `teachers`
76 | --
77 | ALTER TABLE `teachers`
78 |   ADD PRIMARY KEY (`id`);
79 | 
80 | --
81 | -- AUTO_INCREMENT for dumped tables
82 | --
83 | 
84 | --
85 | -- AUTO_INCREMENT for table `students`
86 | --
87 | ALTER TABLE `students`
88 |   MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=9;
89 | COMMIT;
90 | 
91 | /*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
92 | /*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
93 | /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
94 | 


--------------------------------------------------------------------------------
/l17-form-1.php:
--------------------------------------------------------------------------------
  1 | <?php  
  2 |     $errs = [];
  3 |     $genderList = ["Male", "Female"];
  4 |     $skillList = ["HTML", "CSS", "JS", "PHP"];
  5 |     $skillText = "";
  6 |     if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['sub123'])) {
  7 |         $uname = safuda($_POST["uname"]);
  8 |         $uemail = safuda($_POST["uemail"]);
  9 |         $gndr = safuda($_POST["gndr"] ?? null);
 10 |         $skills = safuda($_POST["skill"] ?? []);
 11 | 
 12 |         if(empty($uname)){
 13 |             $errs["name"] = "<span style='color: red'>Please provide the user name</span>";
 14 |         }elseif(!preg_match("/^[A-Za-z. ]*$/", $uname)){
 15 |             $errs["name"] = "<span style='color: red'>Invalid user name</span>";
 16 |         }else{
 17 |             $crrUname = $uname;
 18 |         }
 19 | 
 20 |         if(empty($uemail)) {
 21 |             $errs["email"] = "<span style='color: red'>Please provide the email address</span>";
 22 |         }elseif(!filter_var($uemail, FILTER_VALIDATE_EMAIL)){
 23 |             $errs["email"] = "<span style='color: red'>Invalid email address</span>";
 24 |         }else{
 25 |             $crrUemail = $uemail;
 26 |         }
 27 | 
 28 |         if(empty($gndr)) {
 29 |             $errs["gndr"] = "<span style='color: red'>Please select your gender</span>";
 30 |         }elseif(!in_array($gndr, $genderList)){
 31 |             $errs["gndr"] = "<span style='color: red'>Paknami bondho korun</span>";
 32 |         }else{
 33 |             $crrGndr = $gndr;
 34 |         }
 35 | 
 36 |         if(count($skills) === 0){
 37 |             $errs["skill"] = "<span style='color: red'>Please select your skills</span>";
 38 |         }else{
 39 |             foreach($skills as $skill){
 40 |                 if(!in_array($skill, $skillList)){
 41 |                     $errs["skill"] = "<span style='color: red'>Har baap ka ek baap hota hey!</span>";
 42 |                 }
 43 |             }
 44 |             if(!isset($errs["skill"])){
 45 |                 $crrSkills = $skills;
 46 |             }
 47 |         }
 48 | 
 49 | 
 50 |         if(isset($crrUname) && isset($crrUemail) && isset($crrGndr) && isset($crrSkills)){
 51 |             foreach($crrSkills as $sk){
 52 |                 $skillText .= "$sk ";
 53 |             }
 54 |             $msg = "
 55 |                 <p style='color: green'>Your Name: $crrUname<br>Your Email: $crrUemail<br>Your Gender : $crrGndr <br> Skills : $skillText</p>
 56 |             ";
 57 |         }
 58 |     }
 59 |     function safuda ($data) {
 60 |         if(gettype($data) === "string"){
 61 |             $kata = htmlspecialchars($data);
 62 |             $data = trim($kata);
 63 |             $data = stripslashes($data);
 64 |             return $data; 
 65 |         }
 66 |         return $data;
 67 |     }
 68 | ?>
 69 | <!DOCTYPE html>
 70 | <html lang="en">
 71 | <head>
 72 |     <meta charset="UTF-8">
 73 |     <meta http-equiv="X-UA-Compatible" content="IE=edge">
 74 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 75 |     <title>Form 1</title>
 76 | </head>
 77 | <body>
 78 |     <form action="./<?= basename($_SERVER['PHP_SELF']) ?>" method="post">
 79 |         <input type="text" placeholder="Your Name" name="uname" value="<?= $uname ?? null; ?>">
 80 |         <br><br>
 81 |         <input type="text" placeholder="Email Address" name="uemail"  value="<?= $uemail ?? null; ?>">
 82 |         <br><br>
 83 |         Gender :
 84 |         <input type="radio" name="gndr" value="Male" <?= (isset($crrGndr) && $crrGndr === "Male")? "checked":null ?>>Male
 85 |         <input type="radio" name="gndr" value="Female" <?= (isset($crrGndr) && $crrGndr === "Female")? "checked":null ?>>Female
 86 |         <br><br>
 87 |         Skills :
 88 |         <input type="checkbox" value="HTML" name="skill[]" <?= (isset($skills) && count($skills) > 0 && in_array("HTML", $skills))? "checked":null ?>>HTML
 89 |         <input type="checkbox" value="CSS" name="skill[]" <?= (isset($skills) && count($skills) > 0 && in_array("CSS", $skills))? "checked":null ?>>CSS
 90 |         <input type="checkbox" value="JS" name="skill[]" <?= (isset($skills) && count($skills) > 0 && in_array("JS", $skills))? "checked":null ?>>JS
 91 |         <input type="checkbox" value="PHP" name="skill[]" <?= (isset($skills) && count($skills) > 0 && in_array("PHP", $skills))? "checked":null ?>>PHP
 92 |         <br><br>
 93 |         <input type="submit" name="sub123">
 94 |     </form>
 95 |     <?php 
 96 |         foreach($errs as $err){
 97 |             echo $err."<br>";
 98 |         }
 99 |     ?>
100 |     <?= $msg ?? null ?>
101 | </body>
102 | </html>


--------------------------------------------------------------------------------
/l20-login-system.php:
--------------------------------------------------------------------------------
  1 | <?php 
  2 |     session_start();
  3 |     $loginInfo = [
  4 |         "kamal"=>123456,
  5 |         "jamal"=>123456,
  6 |         "tomal"=>123456,
  7 |         "akmal"=>123456,
  8 |         "mal"=>123456,
  9 |     ];
 10 |     if (isset($_POST['log123'])) {
 11 |         $uname = safuda($_POST['uname']);
 12 |         $pass = safuda($_POST['pass']);
 13 | 
 14 |         if(empty($uname)){
 15 |             $errUser = "Please write your username";
 16 |         }elseif(!preg_match("/^[A-Za-z. ]*$/", $uname)){
 17 |             $errUser = "Invalid username";
 18 |         }else{
 19 |             $crrUser = $uname;
 20 |         }
 21 | 
 22 |         if(empty($pass)){
 23 |             $errPass = "Please write your password";
 24 |         }else{
 25 |             $crrPass = $pass;
 26 |         }
 27 | 
 28 |         if(isset($crrUser) && isset($crrPass)){
 29 |             if(isset($loginInfo[$crrUser]) && $loginInfo[$crrUser] == $crrPass){
 30 |                 $_SESSION['uName'] = $crrUser;
 31 |             }else{
 32 |                 $errMsg = "<div class='alert alert-danger alert-dismissible'><button class='btn-close' data-bs-dismiss='alert'></button>Invalid username or password</div>";
 33 |             }
 34 |         }
 35 |     }
 36 | 
 37 |     if(isset($_POST['lout123'])){
 38 |         session_unset();
 39 |     }
 40 |     function safuda ($data){
 41 |         $data = htmlspecialchars($data);
 42 |         $data = trim($data);
 43 |         $data = stripslashes($data);
 44 |         return $data;
 45 |     }
 46 | ?>
 47 | <!DOCTYPE html>
 48 | <html lang="en">
 49 | <head>
 50 |     <meta charset="UTF-8">
 51 |     <meta http-equiv="X-UA-Compatible" content="IE=edge">
 52 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 53 |     <title>Login System</title>
 54 |     <!-- CSS only -->
 55 | <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-gH2yIJqKdNHPEq0n4Mqa/HGKIhSkIHeL5AyhkYV8i59U5AR6csBvApHHNl/vI1Bx" crossorigin="anonymous">
 56 | </head>
 57 | <body>
 58 |     <?php  
 59 |         if(isset($_SESSION['uName'])){
 60 |     ?>
 61 |     <div class="container">
 62 |         <div class="row min-vh-100 d-flex">
 63 |             <div class="col-md-6 m-auto border shadow rounded display-6 p-4 text-center">
 64 |                 Welcome <span class="text-capitalize"><?= $_SESSION['uName']; ?></span>
 65 |                 <form action="" method="post">
 66 |                     <button type="submit" class="d-block m-auto btn btn-warning my-3 btn-outline-dark" name="lout123">Logout</button>
 67 |                 </form>
 68 |             </div>
 69 |         </div>
 70 |     </div>
 71 |     <?php }else{ ?>
 72 |     <div class="container">
 73 |         <div class="row min-vh-100 d-flex">
 74 |             <div class="col-md-6 m-auto border shadow rounded p-4">
 75 |                 <h2 class="mb-3">Login Form</h2>
 76 |                 <form action="" method="post">
 77 |                     <div class="mb-3 form-floating">
 78 |                         <input 
 79 |                         type="text" 
 80 |                         placeholder="User Name" 
 81 |                         class="form-control 
 82 |                         <?= (isset($errUser))? "is-invalid":null ?>
 83 |                         <?= (isset($crrUser))? "is-valid":null ?>
 84 |                         " 
 85 |                         name="uname" 
 86 |                         value="<?= $uname ?? null; ?>"
 87 |                         >
 88 |                         <label for="">User Name</label>
 89 |                         <div class="valid-feedback">
 90 |                             Username is inputted currectly!
 91 |                         </div>
 92 |                         <div class="invalid-feedback">
 93 |                             <?= $errUser ?? null ?>
 94 |                         </div>
 95 |                     </div>
 96 |                     <div class="mb-3 form-floating">
 97 |                         <input type="password" placeholder="Password" 
 98 |                         class="
 99 |                         form-control
100 |                         <?= (isset($errPass))? "is-invalid":null ?>
101 |                         <?= (isset($crrPass))? "is-valid":null ?>
102 |                         " 
103 |                         name="pass"
104 |                         value="<?= $pass ?? null ?>"
105 |                         >
106 |                         <label for="">Password</label>
107 |                         <div class="valid-feedback">
108 |                             Password is correct!
109 |                         </div>
110 |                         <div class="invalid-feedback">
111 |                             <?= $errPass ?? null ?>
112 |                         </div>
113 |                     </div>
114 |                     <div class="mb-3">
115 |                         <input type="submit" value="Login" name="log123" class="btn btn-primary">
116 |                     </div>
117 |                 </form>
118 |                 <?= $errMsg ?? null; ?>
119 |             </div>
120 |         </div>
121 |     </div>
122 |     <?php } ?>
123 |     <!-- JavaScript Bundle with Popper -->
124 |     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0/dist/js/bootstrap.bundle.min.js" integrity="sha384-A3rJD856KowSb7dwlZdYEkO39Gagi7vIsF0jrRAoQmDKKtQBHUuLZ9AsSv4jD4Xa" crossorigin="anonymous"></script>
125 | </body>
126 | </html>


--------------------------------------------------------------------------------
/bac75.sql:
--------------------------------------------------------------------------------
  1 | -- phpMyAdmin SQL Dump
  2 | -- version 5.1.0
  3 | -- https://www.phpmyadmin.net/
  4 | --
  5 | -- Host: 127.0.0.1
  6 | -- Generation Time: Sep 01, 2022 at 10:20 AM
  7 | -- Server version: 10.4.18-MariaDB
  8 | -- PHP Version: 8.0.3
  9 | 
 10 | SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
 11 | START TRANSACTION;
 12 | SET time_zone = "+00:00";
 13 | 
 14 | 
 15 | /*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
 16 | /*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
 17 | /*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
 18 | /*!40101 SET NAMES utf8mb4 */;
 19 | 
 20 | --
 21 | -- Database: `bac75`
 22 | --
 23 | 
 24 | -- --------------------------------------------------------
 25 | 
 26 | --
 27 | -- Table structure for table `district`
 28 | --
 29 | 
 30 | CREATE TABLE `district` (
 31 |   `SNo` int(11) NOT NULL,
 32 |   `District` varchar(20) DEFAULT NULL,
 33 |   `Division` varchar(20) DEFAULT NULL
 34 | ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 35 | 
 36 | --
 37 | -- Dumping data for table `district`
 38 | --
 39 | 
 40 | INSERT INTO `district` (`SNo`, `District`, `Division`) VALUES
 41 | (1, '', ''),
 42 | (2, 'Barisal District', 'Barisal'),
 43 | (3, 'Bhola District', 'Barisal'),
 44 | (4, 'Jhalokati District', 'Barisal'),
 45 | (5, 'Patuakhali District', 'Barisal'),
 46 | (6, 'Pirojpur District', 'Barisal'),
 47 | (7, 'Bandarban District', 'Chittagong'),
 48 | (8, 'Brahmanbaria Distric', 'Chittagong'),
 49 | (9, 'Chandpur District', 'Chittagong'),
 50 | (10, 'Chittagong District', 'Chittagong'),
 51 | (11, 'Comilla District', 'Chittagong'),
 52 | (12, 'Cox\'s Bazar District', 'Chittagong'),
 53 | (13, 'Feni District', 'Chittagong'),
 54 | (14, 'Khagrachhari Distric', 'Chittagong'),
 55 | (15, 'Lakshmipur District', 'Chittagong'),
 56 | (16, 'Noakhali District', 'Chittagong'),
 57 | (17, 'Rangamati District', 'Chittagong'),
 58 | (18, 'Dhaka District', 'Dhaka'),
 59 | (19, 'Faridpur District', 'Dhaka'),
 60 | (20, 'Gazipur District', 'Dhaka'),
 61 | (21, 'Gopalganj District', 'Dhaka'),
 62 | (22, 'Jamalpur District', 'Dhaka'),
 63 | (23, 'Kishoreganj District', 'Dhaka'),
 64 | (24, 'Madaripur District', 'Dhaka'),
 65 | (25, 'Manikganj District', 'Dhaka'),
 66 | (26, 'Munshiganj District', 'Dhaka'),
 67 | (27, 'Mymensingh District', 'Dhaka'),
 68 | (28, 'Narayanganj District', 'Dhaka'),
 69 | (29, 'Narsingdi District', 'Dhaka'),
 70 | (30, 'Netrakona District', 'Dhaka'),
 71 | (31, 'Rajbari District', 'Dhaka'),
 72 | (32, 'Shariatpur District', 'Dhaka'),
 73 | (33, 'Sherpur District', 'Dhaka'),
 74 | (34, 'Tangail District', 'Dhaka'),
 75 | (35, 'Bagerhat District', 'Khulna'),
 76 | (36, 'Chuadanga District', 'Khulna'),
 77 | (37, 'Jessore District', 'Khulna'),
 78 | (38, 'Jhenaidah District', 'Khulna'),
 79 | (39, 'Khulna District', 'Khulna'),
 80 | (40, 'Kushtia District', 'Khulna'),
 81 | (41, 'Magura District', 'Khulna'),
 82 | (42, 'Meherpur District', 'Khulna'),
 83 | (43, 'Narail District', 'Khulna'),
 84 | (44, 'Satkhira District', 'Khulna'),
 85 | (45, 'Bogra District', 'Rajshahi'),
 86 | (46, 'Joypurhat District', 'Rajshahi'),
 87 | (47, 'Naogaon District', 'Rajshahi'),
 88 | (48, 'Natore District', 'Rajshahi'),
 89 | (49, 'Nawabganj District', 'Rajshahi'),
 90 | (50, 'Pabna District', 'Rajshahi'),
 91 | (51, 'Rajshahi District', 'Rajshahi'),
 92 | (52, 'Sirajganj District', 'Rajshahi'),
 93 | (53, 'Dinajpur District', 'Rangpur'),
 94 | (54, 'Gaibandha District', 'Rangpur'),
 95 | (55, 'Kurigram District', 'Rangpur'),
 96 | (56, 'Lalmonirhat District', 'Rangpur'),
 97 | (57, 'Nilphamari District', 'Rangpur'),
 98 | (58, 'Panchagarh District', 'Rangpur'),
 99 | (59, 'Rangpur District', 'Rangpur'),
100 | (60, 'Thakurgaon District', 'Rangpur'),
101 | (61, 'Habiganj District', 'Sylhet'),
102 | (62, 'Moulvibazar District', 'Sylhet'),
103 | (63, 'Sunamganj District', 'Sylhet'),
104 | (64, 'Sylhet District', 'Sylhet');
105 | 
106 | -- --------------------------------------------------------
107 | 
108 | --
109 | -- Table structure for table `produt`
110 | --
111 | 
112 | CREATE TABLE `produt` (
113 |   `id` int(11) NOT NULL,
114 |   `name` varchar(40) DEFAULT NULL,
115 |   `price` float(8,2) DEFAULT NULL,
116 |   `quantity` int(11) DEFAULT NULL,
117 |   `vendorName` varchar(65) DEFAULT NULL,
118 |   `mDate` date DEFAULT NULL,
119 |   `eDate` date DEFAULT NULL,
120 |   `totalAmount` float(8,2) DEFAULT NULL
121 | ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
122 | 
123 | --
124 | -- Dumping data for table `produt`
125 | --
126 | 
127 | INSERT INTO `produt` (`id`, `name`, `price`, `quantity`, `vendorName`, `mDate`, `eDate`, `totalAmount`) VALUES
128 | (1, 'Mouse', 450.00, 1000, 'Computer Source', '2021-10-01', '2023-10-01', 450000.00),
129 | (2, 'Keyboard', 450.00, 1000, 'Computer Source', '2021-10-01', '2023-10-01', 450000.00),
130 | (3, 'Monitor', 8000.00, 50, 'Computer Source', '2021-10-01', '2023-10-01', 400000.00);
131 | 
132 | -- --------------------------------------------------------
133 | 
134 | --
135 | -- Table structure for table `result`
136 | --
137 | 
138 | CREATE TABLE `result` (
139 |   `id` int(11) NOT NULL,
140 |   `html` int(11) DEFAULT NULL,
141 |   `css` int(11) DEFAULT NULL,
142 |   `bac` int(11) DEFAULT NULL,
143 |   `javascript` int(11) DEFAULT NULL,
144 |   `stuid` int(11) NOT NULL
145 | ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
146 | 
147 | --
148 | -- Dumping data for table `result`
149 | --
150 | 
151 | INSERT INTO `result` (`id`, `html`, `css`, `bac`, `javascript`, `stuid`) VALUES
152 | (1, 40, 45, 48, 40, 5),
153 | (2, 50, 40, 48, 35, 4),
154 | (3, 40, 40, 40, 40, 1),
155 | (4, 30, 30, 30, 30, 2),
156 | (5, 45, 45, 45, 45, 3);
157 | 
158 | -- --------------------------------------------------------
159 | 
160 | --
161 | -- Table structure for table `stuinfo`
162 | --
163 | 
164 | CREATE TABLE `stuinfo` (
165 |   `id` int(11) NOT NULL,
166 |   `name` varchar(30) DEFAULT NULL,
167 |   `email` varchar(30) DEFAULT NULL,
168 |   `address` varchar(45) DEFAULT NULL
169 | ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
170 | 
171 | --
172 | -- Dumping data for table `stuinfo`
173 | --
174 | 
175 | INSERT INTO `stuinfo` (`id`, `name`, `email`, `address`) VALUES
176 | (1, 'Sojib', 'sojib@dipti.com.bd', 'Rayarbag'),
177 | (2, 'Shawn', 'shawn@dipti.com.bd', 'Lalmatia'),
178 | (3, 'Sadat', 'sadat@dipti.com.bd', 'Sobahna Bagh'),
179 | (4, 'Ajoy', 'ajoy@dipti.com.bd', 'Mohammadpur'),
180 | (5, 'Ratul', 'ratul@dipti.com.bd', 'Mirpur');
181 | 
182 | --
183 | -- Indexes for dumped tables
184 | --
185 | 
186 | --
187 | -- Indexes for table `district`
188 | --
189 | ALTER TABLE `district`
190 |   ADD PRIMARY KEY (`SNo`);
191 | 
192 | --
193 | -- Indexes for table `produt`
194 | --
195 | ALTER TABLE `produt`
196 |   ADD PRIMARY KEY (`id`);
197 | 
198 | --
199 | -- Indexes for table `result`
200 | --
201 | ALTER TABLE `result`
202 |   ADD PRIMARY KEY (`id`),
203 |   ADD KEY `id` (`stuid`);
204 | 
205 | --
206 | -- Indexes for table `stuinfo`
207 | --
208 | ALTER TABLE `stuinfo`
209 |   ADD PRIMARY KEY (`id`);
210 | 
211 | --
212 | -- AUTO_INCREMENT for dumped tables
213 | --
214 | 
215 | --
216 | -- AUTO_INCREMENT for table `district`
217 | --
218 | ALTER TABLE `district`
219 |   MODIFY `SNo` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=65;
220 | 
221 | --
222 | -- AUTO_INCREMENT for table `produt`
223 | --
224 | ALTER TABLE `produt`
225 |   MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=4;
226 | 
227 | --
228 | -- AUTO_INCREMENT for table `result`
229 | --
230 | ALTER TABLE `result`
231 |   MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=6;
232 | 
233 | --
234 | -- AUTO_INCREMENT for table `stuinfo`
235 | --
236 | ALTER TABLE `stuinfo`
237 |   MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=6;
238 | 
239 | --
240 | -- Constraints for dumped tables
241 | --
242 | 
243 | --
244 | -- Constraints for table `result`
245 | --
246 | ALTER TABLE `result`
247 |   ADD CONSTRAINT `id` FOREIGN KEY (`stuid`) REFERENCES `stuinfo` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION;
248 | COMMIT;
249 | 
250 | /*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
251 | /*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
252 | /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
253 | 


--------------------------------------------------------------------------------
/l35-crud.php:
--------------------------------------------------------------------------------
  1 | <!DOCTYPE html>
  2 | <html lang="en">
  3 | 
  4 | <head>
  5 |     <meta charset="UTF-8">
  6 |     <meta http-equiv="X-UA-Compatible" content="IE=edge">
  7 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  8 |     <title>Document</title>
  9 |     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/toastr.js/latest/toastr.min.css">
 10 |     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.2.1/css/bootstrap.min.css">
 11 |     <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.1/jquery.min.js"></script>
 12 |     <script src="https://cdnjs.cloudflare.com/ajax/libs/toastr.js/latest/js/toastr.min.js"></script>
 13 |     <script>
 14 |         const err = () => {
 15 |             toastr.error('Something went wrong');
 16 |         }
 17 |         const suc = ($msg) => {
 18 |             toastr.info($msg);
 19 |         }
 20 |     </script>
 21 |     <style>
 22 |         .toast-message {
 23 |             color: #000 !important;
 24 |         }
 25 |     </style>
 26 |     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.1/dist/js/bootstrap.bundle.min.js" integrity="sha384-u1OknCvxWvY5kfmNBILK2hRnQC3Pr17a+RTT6rIHI7NnikvbZlHgTPOOmMi466C8" crossorigin="anonymous"></script>
 27 | </head>
 28 | 
 29 | <body>
 30 |     <?php
 31 |     $conn = mysqli_connect("localhost", "root", "", "b76crud");
 32 |     $students = $conn->query("SELECT * FROM students ORDER BY `id` DESC");
 33 |     $fileLink = basename($_SERVER['PHP_SELF']);
 34 | 
 35 |     if (!isset($_GET['update'])) {
 36 |         if ($students->num_rows > 5) {
 37 |             $_GET['limit'] ?? header("location: $fileLink?page=1&limit=5");
 38 |             $limit = $_GET['limit'];
 39 |             $page = $_GET['page'];
 40 |             $total_page = ceil($students->num_rows / $limit);
 41 |             $start_point = ($page - 1) * $limit;
 42 |             $students = $conn->query("SELECT * FROM students ORDER BY `id` DESC LIMIT $start_point, $limit");
 43 |         }
 44 |     }
 45 | 
 46 | 
 47 |     $genderList = ["Male", "Female"];
 48 |     $cityList = ["Dhaka", "Rajshahi", "Chittagong", "Khulna", "Rongpur", "Bogura", "Barishal", "Others"];
 49 | 
 50 |     if (isset($_POST['addStudent']) || isset($_POST['upStudent'])) {
 51 |         $sname = safuda($_POST['sname']);
 52 |         $gender = safuda($_POST['gender'] ?? null);
 53 |         $city = safuda($_POST['city']);
 54 | 
 55 |         if (empty($sname)) {
 56 |             $errName = "Please write your name";
 57 |         } elseif (!preg_match("/^[A-Za-z. ]*$/", $sname)) {
 58 |             $errName = "Invalid name format";
 59 |         } else {
 60 |             $crrSname = $conn->real_escape_string($sname);
 61 |         }
 62 | 
 63 |         if (empty($gender)) {
 64 |             $errGender = "Please select your gender";
 65 |         } elseif (!in_array($gender, $genderList)) {
 66 |             $errGender = "Paknami bondho korun";
 67 |         } else {
 68 |             $crrGender = $conn->real_escape_string($gender);
 69 |         }
 70 | 
 71 |         if (empty($city)) {
 72 |             $errCity = "Please select your city";
 73 |         } elseif (!in_array($city, $cityList)) {
 74 |             $errCity = "Paknami bondho korun";
 75 |         } else {
 76 |             $crrCity = $conn->real_escape_string($city);
 77 |         }
 78 | 
 79 |         if (isset($crrSname) && isset($crrGender) && isset($crrCity)) {
 80 |             if (isset($_POST['addStudent'])) {
 81 |                 $insert_query = "INSERT INTO `students` (`name`, `gender`, `city`) VALUES ('$crrSname', '$crrGender', '$crrCity')";
 82 |                 $insert = $conn->query($insert_query);
 83 |                 if (!$insert) {
 84 |                     echo '<script>err()</script>';
 85 |                 } else {
 86 |                     $cp = $_SERVER['PHP_SELF'];
 87 |                     echo "<script>suc('Student added successfully'); setTimeout(()=>{location.href='$cp'}, 2000) </script>";
 88 |                 }
 89 |             }
 90 | 
 91 |             if (isset($_POST['upStudent'])) {
 92 |                 $updateID = $conn->real_escape_string($_POST['updateID']);
 93 |                 $update_query = "UPDATE `students` SET `name` = '$crrSname', `gender` = '$crrGender', `city` = '$crrCity' WHERE `id` = $updateID";
 94 |                 $update = $conn->query($update_query);
 95 |                 if (!$update) {
 96 |                     echo '<script>err()</script>';
 97 |                 } else {
 98 |                     $cp = $_SERVER['PHP_SELF'];
 99 |                     echo "<script>suc('Student updated successfully'); setTimeout(()=>{location.href='$cp'}, 2000) </script>";
100 |                 }
101 |             }
102 |         }
103 |     }
104 | 
105 |     function safuda($data)
106 |     {
107 |         $data = htmlspecialchars($data);
108 |         $data = trim($data);
109 |         $data = stripslashes($data);
110 |         return $data;
111 |     }
112 | 
113 |     if (isset($_GET['update'])) {
114 |         $updateID = safuda($_GET['update']);
115 |         $get_update_data_query = "SELECT * FROM `students` WHERE `id` =  $updateID";
116 |         $get_update_data = $conn->query($get_update_data_query);
117 |         if ($get_update_data->num_rows != 1) {
118 |             echo "<script>history.back()</script>";
119 |         } else {
120 |             $update_data = $get_update_data->fetch_object();
121 |             $city = $update_data->city;
122 |         }
123 |     }
124 | 
125 |     if (isset($_POST['sdel'])) {
126 |         $delId = safuda($_POST['delId']);
127 |         $del_query = "DELETE FROM `students` WHERE `id` =  $delId";
128 |         $del = $conn->query($del_query);
129 |         if (!$del) {
130 |             echo '<script>err()</script>';
131 |         } else {
132 |             $cp = $_SERVER['PHP_SELF'];
133 |             echo "<script>suc('Student delted successfully'); setTimeout(()=>{location.href='$cp'}, 2000) </script>";
134 |         }
135 |     }
136 |     ?>
137 |     <div class="container">
138 |         <div class="row py-5">
139 |             <?php if (!isset($_GET['update'])) { ?>
140 | 
141 |                 <div class="col-md-6">
142 |                     <form action="" method="post">
143 |                         <h2 class="mb-3">Add Student</h2>
144 |                         <div class="mb-3">
145 |                             <input type="text" placeholder="Student Name" name="sname" class="form-control <?= (isset($errName) ? "is-invalid" : null) ?>" value="<?= $sname ?? null ?>">
146 |                             <div class="invalid-feedback"><?= $errName ?? null ?></div>
147 |                         </div>
148 |                         <div class="mb-3">
149 |                             <div class="form-check form-check-inline ps-3">
150 |                                 <label for="" class="form-check-label">Gender : </label>
151 |                             </div>
152 |                             <div class="from-check form-check-inline">
153 |                                 <input type="radio" class="form-check-input <?= (isset($errGender) ? "is-invalid" : null) ?>" name="gender" value="Male" <?= (isset($gender) && $gender == "Male") ? "checked" : null; ?>>
154 |                                 <label for="" class="form-check-label">Male</label>
155 |                             </div>
156 |                             <div class="from-check form-check-inline">
157 |                                 <input type="radio" class="form-check-input <?= (isset($errGender) ? "is-invalid" : null) ?>" name="gender" value="Female" <?= (isset($gender) && $gender == "Female") ? "checked" : null; ?>>
158 |                                 <label for="" class="form-check-label">Female</label>
159 |                             </div>
160 |                             <input type="hidden" class="is-invalid">
161 |                             <div class="invalid-feedback"><?= $errGender ?? null ?></div>
162 |                         </div>
163 |                         <div class="mb-3">
164 |                             <select name="city" id="" class="form-select <?= (isset($errCity) ? "is-invalid" : null) ?>">
165 |                                 <option value="<?= (isset($city)) ? $city : null ?>"><?= (isset($city)) ? $city : "--SELECT CITY--" ?></option>
166 |                                 <?php foreach ($cityList as $ct) {
167 |                                     if ($ct != $city) { ?>
168 |                                         <option value="<?= $ct ?>"><?= $ct ?></option>
169 |                                 <?php }
170 |                                 } ?>
171 |                             </select>
172 |                             <div class="invalid-feedback">
173 |                                 <?= $errCity ?? null ?>
174 |                             </div>
175 |                         </div>
176 | 
177 |                         <input type="submit" value="Add Student" name="addStudent" class="btn btn-primary">
178 |                     </form>
179 |                 </div>
180 |                 <div class="col-md-6">
181 |                     <table class="table table-striped table-hover">
182 |                         <tr>
183 |                             <th>S.N.</th>
184 |                             <th>Name</th>
185 |                             <th>Gender</th>
186 |                             <th>City</th>
187 |                             <th>Action</th>
188 |                         </tr>
189 |                         <?php
190 |                         $sn = $start_point + 1;
191 |                         while ($student = $students->fetch_object()) {
192 |                         ?>
193 |                             <tr>
194 |                                 <td><?= $sn ?></td>
195 |                                 <td><?= $student->name ?></td>
196 |                                 <td><?= $student->gender ?></td>
197 |                                 <td><?= $student->city ?></td>
198 |                                 <td>
199 |                                     <a href='<?= "$fileLink?update=$student->id" ?>' class="btn btn-sm btn-warning">Update</a>
200 |                                     <button class="btn btn-sm btn-danger" data-bs-toggle="modal" data-bs-target="#exampleModal" onclick="modFunc(<?= $student->id; ?>)">DELETE</button>
201 |                                 </td>
202 |                             </tr>
203 |                         <?php ++$sn;
204 |                         } ?>
205 |                     </table>
206 |                     <nav aria-label="...">
207 |                         <?php if (isset($_GET['limit'])) {  ?>
208 |                             <ul class="pagination">
209 |                                 <li class="page-item <?= ($page <= 1) ? 'disabled' : null ?>">
210 |                                     <a class="page-link" href='<?= "$fileLink?page=" . (($page <= 1) ? 1 : $page - 1) . "&limit=$limit"; ?>'>Previous</a>
211 |                                 </li>
212 |                                 <?php
213 |                                 if ($total_page - 5 >= $page) {
214 |                                     if ($page + 2 <= 4) {
215 |                                         $startPagination = 1;
216 |                                         $endPagination = 5;
217 |                                     } else {
218 |                                         $startPagination = $page - 2;
219 |                                         $endPagination = $page + 2;
220 |                                     }
221 |                                 } else {
222 |                                     $startPagination = $total_page - 5;
223 |                                     $endPagination = $total_page;
224 |                                 }
225 |                                 for ($i = $startPagination; $i <= $endPagination; $i++) {
226 |                                 ?>
227 |                                     <li class="page-item <?= ($i == $page) ? 'active' : null ?>" aria-current="page">
228 |                                         <a class="page-link" href='<?= "$fileLink?page=$i&limit=$limit"; ?>'><?= $i ?></a>
229 |                                     </li>
230 |                                 <?php } ?>
231 |                                 <li class="page-item <?= ($page == $total_page) ? 'disabled' : null ?>">
232 |                                     <a class="page-link" href='<?= "$fileLink?page=" . (($page >= $total_page) ? $total_page : $page + 1) . "&limit=$limit"; ?>'>Next</a>
233 |                                 </li>
234 |                             </ul>
235 |                         <?php } ?>
236 |                     </nav>
237 |                 </div>
238 |             <?php } else { ?>
239 |                 <div class="row">
240 |                     <div class="col-md-6 m-auto">
241 |                         <form action="" method="post">
242 |                             <h2 class="mb-3">Update Student</h2>
243 |                             <input type="hidden" value="<?= $updateID ?? null ?>" name="updateID">
244 |                             <div class="mb-3">
245 |                                 <input type="text" placeholder="Student Name" name="sname" class="form-control <?= (isset($errName) ? "is-invalid" : null) ?>" value="<?= $sname ?? $update_data->name ?? null ?>">
246 |                                 <div class="invalid-feedback"><?= $errName ?? null ?></div>
247 |                             </div>
248 |                             <div class="mb-3">
249 |                                 <div class="form-check form-check-inline ps-3">
250 |                                     <label for="" class="form-check-label">Gender : </label>
251 |                                 </div>
252 |                                 <div class="from-check form-check-inline">
253 |                                     <input type="radio" class="form-check-input <?= (isset($errGender) ? "is-invalid" : null) ?>" name="gender" value="Male" <?= (isset($gender) && $gender == "Male") ? "checked" : null; ?> <?= (!isset($gender) && $update_data->gender == "Male") ? "checked" : null; ?>>
254 |                                     <label for="" class="form-check-label">Male</label>
255 |                                 </div>
256 |                                 <div class="from-check form-check-inline">
257 |                                     <input type="radio" class="form-check-input <?= (isset($errGender) ? "is-invalid" : null) ?>" name="gender" value="Female" <?= (isset($gender) && $gender == "Female") ? "checked" : null; ?> <?= (!isset($gender) && $update_data->gender == "Female") ? "checked" : null; ?>>
258 |                                     <label for="" class="form-check-label">Female</label>
259 |                                 </div>
260 |                                 <input type="hidden" class="is-invalid">
261 |                                 <div class="invalid-feedback"><?= $errGender ?? null ?></div>
262 |                             </div>
263 |                             <div class="mb-3">
264 |                                 <select name="city" id="" class="form-select <?= (isset($errCity) ? "is-invalid" : null) ?>">
265 |                                     <option value="<?= (isset($city)) ? $city : null ?>"><?= (isset($city)) ? $city : "--SELECT CITY--" ?></option>
266 |                                     <?php foreach ($cityList as $ct) {
267 |                                         if ($ct != $city) { ?>
268 |                                             <option value="<?= $ct ?>"><?= $ct ?></option>
269 |                                     <?php }
270 |                                     } ?>
271 |                                 </select>
272 |                                 <div class="invalid-feedback">
273 |                                     <?= $errCity ?? null ?>
274 |                                 </div>
275 |                             </div>
276 | 
277 |                             <input type="submit" value="Update Student" name="upStudent" class="btn btn-primary">
278 |                             <button type="button" onclick="history.back()" class="btn btn-info">Back</button>
279 |                         </form>
280 |                     </div>
281 |                 </div>
282 | 
283 |             <?php } ?>
284 |         </div>
285 |     </div>
286 | 
287 |     <div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
288 |         <div class="modal-dialog modal-dialog-centered">
289 |             <div class="modal-content">
290 |                 <div class="modal-body">
291 |                     <h4>
292 |                         Do y ou realy want to delete the student information?
293 |                     </h4>
294 |                     <form action="" method="post" class="d-inline">
295 |                         <input type="hidden" value="" name="delId" id="delId">
296 |                         <button class="btn btn-danger btn-sm" name="sdel">Yes</button>
297 |                     </form>
298 |                     <button type="button" class="btn btn-success btn-sm" data-bs-dismiss="modal" aria-label="Close">No</button>
299 |                 </div>
300 |             </div>
301 |         </div>
302 |     </div>
303 |     <script>
304 |         const modFunc = (id) => {
305 |             document.getElementById("delId").value = id;
306 |         }
307 |     </script>
308 | 
309 | </body>
310 | 
311 | </html>


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