AlternC/bureau/admin/adm_cancel.php

<?php
/*
 ----------------------------------------------------------------------
 LICENSE

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License (GPL)
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 To read the license please visit http://www.gnu.org/copyleft/gpl.html
 ----------------------------------------------------------------------
*/

/**
 * Page used by Administrator to forbid an impersonate session
 * to go back to Admin rights.
 * 
 * @copyright AlternC-Team 2000-2017 https://alternc.com/
 */

require_once("../class/config.php");

setcookie('oldid','',0,'/');
unset($_COOKIE['oldid']);

Header('Location: /main.php');