Closing a session from a link

[goocharlton]

I am trying to close a php session from a link that the user clicks.

 

For example, I want the user's session to end when he clicks "(logout)".

 

How do I do this?

[abdfahim]

if(isset($_GET['logout'])){
$_SESSION=array(); // I always use this line for more security
unset($_SESSION);
// here you can use Header if you want to redirect the user to some other place
}

<a href="?logout=1">logout</a>

[Fadion]

From the manual, the best way should be:

 

<?php
session_start();
$_SESSION = array();
if (isset($_COOKIE[session_name()])) {
    setcookie(session_name(), '', time()-42000, '/');
}
session_destroy();
?>

[goocharlton]

Thanks guys.

 

GuiltyGear could you please expand on your answer and give an explanation?

[Fadion]

You can use it in the way suggested by abdbuet, meaning insert the code in an if() to check if logout isset().

 

<?php
session_start();
if(isset($_GET['logout'])){
     // Unset all of the session variables.
     $_SESSION = array();

     // If it's desired to kill the session, also delete the session cookie.
     // Note: This will destroy the session, and not just the session data!
     if (isset($_COOKIE[session_name()])) {
         setcookie(session_name(), '', time()-42000, '/');
     }

     // Finally, destroy the session.
     session_destroy();
}
?>

 

The comments are from the manual (in the session_destroy() function). What it does is simple, it destroys the session variable together with it's associated cookie.