3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a=array(1,2,3); $b=&$a; unset($b); echo $a;
Output for 5.4.0 - 7.2.0
Notice: Array to string conversion in /in/Dl0jU on line 5 Array
Output for 4.3.0 - 5.3.29
Array