3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1, 2, 3, 4, 5, 6); echo $a[-1];
Output for 5.3.5 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined offset: -1 in /in/qCaq9 on line 3
Output for hhvm-3.12.0
Notice: Undefined index: -1 in /in/qCaq9 on line 3
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.2.17
Notice: Undefined offset: -1 in /in/qCaq9 on line 3