3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $keywords = preg_split("/[\s,]+/", "php, regular expressions"); print( $keywords );?>
based on uOjf5
Output for 5.0.4 - 7.2.0
Notice: Undefined variable: keywords  in /in/8OdJr on line 3
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: keywords  in /in/8OdJr on line 3