3v4l.org

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