3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $keywords = preg_split("/[\s,]+/", "php, regular expressions");print_r( $keywords );?>
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: keywords  in /in/r87gV on line 2
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: keywords  in /in/r87gV on line 2