3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $array1 = array(1); //$x = &$array1[1]; //$array2 = $array1; //$array2[1] = 22; //echo $array1[1];
based on 8eDbt
Output for 5.4.0 - 7.2.0