3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $n = 10; while($n-- > 0) { echo "$n\n"; }
based on LmMnQ
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.1.0 - 7.3.0rc3
9 8 7 6 5 4 3 2 1 0