3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = 1; $z = array(); echo $z['hello']; if ($z == 5) echo 'not set';
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined index: hello in /in/jemjc on line 5
Output for 4.3.0 - 5.2.17
Notice: Undefined index: hello in /in/jemjc on line 5