3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $host = 'host.dupa.com'; preg_match('/([^\.])\.([^\.])$/', $host, $matches); echo $matches[0];
Output for 5.3.0 - 7.2.0
Notice: Undefined offset: 0 in /in/hdiPQ on line 7
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 0 in /in/hdiPQ on line 7