3v4l.org

run code in 300+ PHP versions simultaneously
<?php function decrypt($a) { $tmp_1 = strtolower(strrev($a)); $tmp_2 = (substr($tmp, 0,4) ^ hexdec('BFF')) ^ hexdec('D77D'); $tmp_3 = substr($tmp,4); for($tmp_5=0; $tmp_5 < strlen($tmp_3); $tmp_5++) { } } define('__FLAG__', 'flag{hidden_flag}'); if(decrypt($_REQUEST['pass']) == 'pwning_the_phpreverse!') { __FLAG__; } ?>

preferences:
52.29 ms | 402 KiB | 5 Q