3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1); $r =& $a; $b = $a; unset($r); $b[0] = 2; var_dump($a[0]);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(1)