3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $someVar = 'bar'; define($someVar, 'foo'); echo bAr;
Output for 7.2.0
Warning: Use of undefined constant bAr - assumed 'bAr' (this will throw an Error in a future version of PHP) in /in/VYCfv on line 6 bAr
Output for 4.3.0 - 7.1.7
Notice: Use of undefined constant bAr - assumed 'bAr' in /in/VYCfv on line 6 bAr