3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array1 = array(1,20); $x = &$array1[1]; $array2 = $array1; $array2[1] = 22; echo $array1[1];
based on sLbN9
Output for 4.3.0 - 7.1.0
22