3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $b = array(2,3,4); $a = $b[-1]; echo $a;
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined offset: -1 in /in/oHkml on line 4
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined index: -1 in /in/oHkml on line 4
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: -1 in /in/oHkml on line 4