removing session vars within same page request

docroot/html/sessions.php

@@ -20,6 +20,8 @@ mkheader("sessions!", "#aea");
     <?php
     if ($_POST['destroy-session'] == "yes") {
         session_destroy();
+        $_SESSION = array();
+
         ?>
             <p>Successfully destroyed session</p>
             <a href="<?php echo $_SERVER['PHP_SELF']; ?>">clear this</a>