3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array(1,2,3); $b = &$a; foreach($a as $v) { echo "$v\n"; unset($a[1]); } print_r($b);
based on 9cTOD
Output for 7.0.0 - 7.2.0
1 2 3 Array ( [0] => 1 [2] => 3 )
Output for 5.3.21 - 5.6.28
1 3 Array ( [0] => 1 [2] => 3 )