3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = '*一行*'; preg_match('/^([^\*]+)\*+/', $str, $m); var_dump($m[1]);
Output for 5.3.0 - 7.1.0
Notice: Undefined offset: 1 in /in/HVJpJ on line 5 NULL
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 1 in /in/HVJpJ on line 5 NULL