3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function decrypt($a) { $a1 = strtolower(strrev($a)); $a2 = hexdec(substr($a1,0, 4)) ^ hexdec('BFF') ^ hexdec('D77D'); $a3 = substr($a2,4); $a4 = ""; $a5 = 0; for($a5=0;$a5<strlen($a3);$a5+=6){ $a6 = ++$a; } $mul=$a6 * $a6; $a7=$mul ^ hexdec('6E'); $ans = octdec(hexdec(substr($a3,0,6))) ^ hexdec('AFE43') ^ hexdec('399AA3') ^ $a7 ^ octdec(hexdec(substr($a3,0,6))); return $a4 . chr($ans); } define('__FLAG__', 'flag{hidden_flag}'); if(decrypt('pass') == 'pwning_the_phpreverse!') { __FLAG__; } ?>
based on 63l75
Output for 7.1.3 - 7.3.0rc3
Warning: A non-numeric value encountered in /in/AVFnh on line 12
Output for 7.1.0 - 7.1.2
Warning: A non-numeric value encountered in /in/AVFnh on line 12 Warning: A non-numeric value encountered in /in/AVFnh on line 12
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.0.20