3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = lo_23; switch(true){ case strpos($a, 'lo'): echo 1234; }
Output for 7.2.0
Warning: Use of undefined constant lo_23 - assumed 'lo_23' (this will throw an Error in a future version of PHP) in /in/sm27Z on line 2
Output for 5.3.19 - 7.1.10
Notice: Use of undefined constant lo_23 - assumed 'lo_23' in /in/sm27Z on line 2