3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; $len = strlen($chars); for ($i = 0; $i < $len; $i++) { echo substr($chars,$i,1); }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
ABCDEFGHIJKLMNOPQRSTUVWXYZ