3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = [1]; foreach ($a as $n) { echo $n; $a[] = $n++; }
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0rc3
1