How can the session_destroy() function affect the passing of session variables in PHP?

When you call session_destroy(), it destroys all data registered to a session, including session variables. This means that any session variables you have set will be lost after calling session_destroy(). To prevent this from happening, you can unset specific session variables before calling session_destroy().

<?php
// Start the session
session_start();

// Unset specific session variables
unset($_SESSION['variable1']);
unset($_SESSION['variable2']);

// Destroy the session
session_destroy();
?>