3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo hi; ?>
Output for 7.2.0
Warning: Use of undefined constant hi - assumed 'hi' (this will throw an Error in a future version of PHP) in /in/Bgd4N on line 2 hi
Output for 4.3.0 - 7.1.10
Notice: Use of undefined constant hi - assumed 'hi' in /in/Bgd4N on line 2 hi