3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = $b = array(); $c = 1; $a[$c++]=$b[$c++];
based on Y6151
Output for 5.3.0 - 7.1.0
Notice: Undefined offset: 2 in /in/pdjnl on line 4
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 2 in /in/pdjnl on line 4