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How to correctly destroy a session in PHP

by Chris Hall/December 1, 2016


To correctly destroy a session in PHP, use the below code. It will destroy all variables, cookies and the session itself.

<?php
// Initialize the session.
// If you are using session_name(“something”), don’t forget it now!
session_start();

// 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 (ini_get(“session.use_cookies”)) {
$params = session_get_cookie_params();
setcookie(session_name(), ”, time() – 42000,
$params[“path”], $params[“domain”],
$params[“secure”], $params[“httponly”]
);
}

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

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