3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = 'https://www.hwtrek.com/project/VscVjE%2FLOxM%3D'; $new_str = ''; do { $new_str = rawurldecode($str); } while (preg_match('/%[0-9a-f]{2,}/i', $str)); echo $new_str, '\n', $str;
based on OGIIk
Output for 5.3.12 - 7.2.0

Process exited with code 137.