3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $some = array('test' => 'val'); echo $some[test];
Output for 7.2.0
Warning: Use of undefined constant test - assumed 'test' (this will throw an Error in a future version of PHP) in /in/dugKb on line 3 val
Output for 4.3.0 - 7.1.10
Notice: Use of undefined constant test - assumed 'test' in /in/dugKb on line 3 val