3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?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]) ? $m[2]: ''; var_dump($ext);
Output for 4.3.0 - 7.1.0
string(6) ".co.uk"