3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $id = 1; $len = strlen($id); $input = "AHD"; $final_len = 5+strlen($input)-$len; echo str_pad($input, $final_len, "0", STR_PAD_RIGHT);
Output for 4.3.0 - 7.2.0
AHD0000