3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $length = 1; $result = ((round($length / 8) * 8) - $length); echo $result > 0 ? $result : 8 - $result;
based on bQvWe
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
9