3v4l.org

run code in 300+ PHP versions simultaneously
<?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, PHP_EOL, $str;
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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 137.
preferences:
192.91 ms | 404 KiB | 228 Q