3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php if(!$_GET['header']) { echo 'nope'; } else echo 'lol'; ?>
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined index: header in /in/n8lPs on line 2 nope
Output for 4.3.0 - 5.2.17
Notice: Undefined index: header in /in/n8lPs on line 2 nope