3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = [1,2,3]; $b = &$a; foreach($a as $v) {echo "$v\n"; unset($a[1]);} ?>
based on VRmeB
Output for 7.0.0 - 7.2.0
1 2 3
Output for 5.5.0 - 5.6.28
1 3