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]); }
Output for 7.0.28 - 7.3.0rc3
1 2 3
Output for 5.6.38
1 3