3v4l.org

run code in 300+ PHP versions simultaneously
<?PHP $s1 = $_GET[md5($_SERVER['HTTP_USER_AGENT'])]; $s2 = $_GET[md5($_SERVER['REMOTE_ADDR'])]; if ($s1!== $s2) exit(1); if (md5($s1)===hash('md5',$s2)) exit(1); if (hash('sha512',$s1,true)!===hash('sha512',$s2,true)) echo 'Flag' ?>
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.27
Parse error: syntax error, unexpected '=' in /in/KpOaj on line 6
Process exited with code 255.
preferences:
175.16 ms | 1395 KiB | 64 Q