- str_split: documentation ( source)
- md5: documentation ( source)
<?php
$str = "Hello";
echo md5($str);
echo ('< br>');
$split=(str_split(md5($str),16));
echo ('-16/16-');
echo $split[0];
echo ('< br>');
echo $split[1];
echo ('< br>');
echo $split[2];
echo ('< br>');
echo md5($split[1]);
?>