View file modules/users/exit.php

<?php
define('R', $_SERVER['DOCUMENT_ROOT']);

require_once(R.'/system/kernel.php');

if(!User::aut()){
	go_exit();
}

setcookie('id', '', (time()-3600), '/');
setcookie('login', '', (time()-3600), '/');
setcookie('password', '', (time()-3600), '/');
session_destroy();
unset($_SESSION['id']);
unset($_SESSION['login']);
unset($_SESSION['password']);
go_exit();
?>