Online PHP editor | refs for bCilf

<?php $_POST['host'] = 'www.seznam.cz'; $_POST['hmac'] = 'ea490cb67d21d43592c2b20a5339da2b373c2de39e4a5bcfab9872d448955376'; $_POST['nonce'] = true; if ( empty($_POST['nonce']) || empty($_POST['hmac']) || empty($_POST['host']) ) { header('HTTP/1.0 400 Bad Request'); exit; } $secret = '6556464'; $secret = hash_hmac('sha256', $_POST['nonce'], $secret); $hmac = hash_hmac('sha256', $_POST['host'], $secret); var_dump($hmac); if ($hmac !== $_POST['hmac']) { header('HTTP/1.0 403 Forbidden'); exit; } var_dump('lol'); echo exec("host " . $_POST['host']);