3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = & $a[$k];
Output for 7.1.0 - 7.2.0
Notice: Undefined variable: k in /in/dH5fQ on line 3 Notice: Undefined variable: k in /in/dH5fQ on line 3
Output for 5.3.20 - 7.0.20
Notice: Undefined variable: k in /in/dH5fQ on line 3