3v4l.org

run code in 300+ PHP versions simultaneously
<?php $host = parse_url('http://www.google.co.uk/test.html'); preg_match('/(.*?)((\.co)?.[a-z]{2,4})$/i', $host['host'], $m); $ext = isset($m[2]) ? $m[2]: '';

preferences:
36.42 ms | 402 KiB | 5 Q