3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array(); if ($arr['a']) { echo "a!"; }
Output for 5.3.0 - 7.1.0
Notice: Undefined index: a in /in/HPqSI on line 3
Output for 4.3.0 - 5.2.17
Notice: Undefined index: a in /in/HPqSI on line 3