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PHP Login and Logout example using sessions.

Program to create simple Login and Logout example using sessions.

✡️login.php

 <html>
 <head>
 <title>Login Form</title>
 </head>
 <body>
 <h2>Login Form</h2>
 <form method="post"   action="checklogin.php">
User Id: <input type="text" name="uid">
<br>
Password: <input type="password" name="pw">
<br>
<input type="submit" value="Login">
</form>
</body>
</html>

✡️ checklogin.php
 <?php
 $uid = $_POST['uid'];
 $pw = $_POST['pw'];

if($uid == 'arun' and $pw == 'arun123')
{ 
session_start();
$_SESSION['sid']=session_id();              header("location:securepage.php");
 }

?>

✡️securepage.php

 <?php
session_start();

 if($_SESSION['sid']==session_id()) 
{ 
       echo "Welcome to you<br>"; 
     echo "<a href='logout.php'>Logout
       <a>";
} 
else
{ 
header("location:login.php");
}
?>

✡️logout.php

<?php 
echo "Logged out scuccessfully"; session_start(); 
session_destroy();  setcookie(PHPSESSID,session_id(),time()-1);
?>
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