3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match("/^PHP/", "PHP", $matches); echo $matches[1]; // 1234 ?>
Output for 5.3.0 - 7.1.7
Notice: Undefined offset: 1 in /in/3ga5S on line 3
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 1 in /in/3ga5S on line 3