3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(0); //require_once('flag.php'); $s1 = $_GET[md5($_SERVER['REMOTE_ADDRESS'])]; $s2 = $_GET[md5($_SERVER['HTTP_USER_AGENT'])]; if ($s1!=$s2) { if (md5($s1)===hash('md5',$s2)) { if (hash('sha512',$s1,true)!= hash('sha512',$s2,true)) { define("FLAG","123"); echo 'You got it'.FLAG; } } } ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
preferences:
202.24 ms | 406 KiB | 314 Q