Redirect to the same page after log out

Question

index.php

<ul class="top">
       <?php if(!isset($_SESSION['login_user'])) { ?>
        <li class="hover"><a href="#" onClick="revealModal('modalPage')">Login</a>
        </li>
         <?php } else {?>
        <li class="hover"><a href="logout.php">Logout</a>
           Welcome <?php echo $_SESSION['login_user']; ?>
        </li>
         <?php } ?>
        <li><a href="registration.php" class="about">Registration</a>
        </li>
    </ul>

logout.php

<?php    
session_start(); 
session_destroy(); 
header('Location:index.php');  
exit;  
?>  

I have my log out button in my every page, so i want that , if an user clicks in log out, he/she should redirect to the same page.. as i ve given the location page index here, but i want to remain in the same page.. any code to redirect to same page ?? Thank you in advance ..

Solution 1

Approach 1: In your logout.php file, you need to check if you have a REFERER url from previous page and redirect, if not, redirect to index.php

<?php    
session_start(); 
session_destroy();
if(isset($_SERVER['HTTP_REFERER'])) {
 header('Location: '.$_SERVER['HTTP_REFERER']);  
} else {
 header('Location: index.php');  
}
exit;  
?>

Approach 2: You can pass a reference to your login page to redirect.

Logout link

<?php
function curPageURL() {
 $pageURL = 'http';
 if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
 $pageURL .= "://";
 if ($_SERVER["SERVER_PORT"] != "80") {
  $pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
 } else {
  $pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
 }
 return $pageURL;
}
?>

<a href="logout.php?redirect=<?php echo base64_encode(curPageURL()); ?>">Logout</a>

logout.php file:

<?php
session_start(); 
session_destroy();
if(isset($_GET['redirect'])) {
 header('Location: '.base64_decode($_GET['redirect']));  
} else {
 header('Location: index.php');  
}
?>

Solution 2

How about,

header('Location:'.$_SERVER['HTTP_REFERER']);

In your login.php file:

$BackToMyPage = $_SERVER['HTTP_REFERER'];
if(isset($BackToMyPage)) {
    header('Location: '.$BackToMyPage);
} else {
    header('Location: index.php'); // default page
}