3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $id = 123; printf("[%06s]",$id) ?>
based on U9dKP
Output for 4.3.0 - 5.6.25, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
[000123]