3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = (string)123; $sum = 1; for($i=0; $i< strlen($a); ++$i){ $sum = $sum + $a[$i]; } echo $sum;
based on jsC6p
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0alpha1
7