3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $groups = array("first","second","third","last"); echo $groups[count($groups)];
Output for 5.3.0 - 7.2.0
Notice: Undefined offset: 4 in /in/iV4td on line 5
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 4 in /in/iV4td on line 5