3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo preg_split("/[ ,]+/", '21, 151, 555');
Output for 5.4.0 - 7.2.0
Notice: Array to string conversion in /in/Wv6QX on line 3 Array
Output for 4.3.0 - 5.3.29
Array