3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match("/^PHPA/", "PHP", $matches); echo $matches[0]; // 1234 ?>
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined offset: 0 in /in/mIAF6 on line 3
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined index: 0 in /in/mIAF6 on line 3
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 0 in /in/mIAF6 on line 3