View file pages/exit.php

<?php

require"../system/config.php";
require"../system/func.php";
require"../system/head.php";
require"../system/error.php";
if(empty($_COOKIE['mylogin']) or empty($_COOKIE['mypass'])){echo'Вы не авторизованы';}else{
$_COOKIE['mylogin']=''; 
$_COOKIE['mypass']='';
session_destroy();
header("Location: ../index.php");}
?>