Question

In our website, we have applied lots of session variables. After setting, we shall unset them to free the server resources.

Apart from unset each session one by one, would there be any function that can check a website that has session variables not being unset yet?

Thank you.

Answer 1

You need session_destroy();

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();
?> 

Also unset the cookie created by the session!