3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(0); REQUIRE_ONCE 'flag.php'; $hash_0 = $_GET[md5($_SERVER['REMOTE_ADDR'])]; $hash_1 = $_GET[md5($_SERVER['HTTP_USER_AGENT'])]; if ($hash_0 != $hash_1) if (md5($hash_0) !== hash('md5', $hash_1)) if (hash('sha512', $hash_0, true) == hash('sha512', $hash_1, true)) echo 'You got it! Here is your flag:' . $FLAG; return;
Output for 4.3.2 - 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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 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

Process exited with code 255.
Output for 4.3.0 - 4.3.1
preferences:
279.27 ms | 401 KiB | 352 Q