- crypt: documentation ( source)
- substr_replace: documentation ( source)
- str_split: documentation ( source)
- ord: documentation ( source)
- join: documentation ( source)
- sprintf: documentation ( source)
<?php
$dat = crypt('https://scontent-fra3-1.xx.fbcdn.net/hphotos-xta1/v/t1.0-9/p720x720/10428530_977985338931421_1442326547988295691_n.jpg?oh=a74f8bf884a5b8dfc8b710e0c598144c&oe=56777937');
$numbers = array(); foreach (str_split($dat) as $chr) {$numbers[] = sprintf('%03d', ord($chr));}
echo substr_replace(join($numbers),"1",16);