- substr: documentation ( source)
- hash: documentation ( source)
- hexdec: documentation ( source)
<?php
$server_seed = "63a7db0259ce35e50eb0949e279c420c9fffcff37278e1ae04fea329a7ffeec4";
$public_seed = "";
$round = "6472802";
$hash = hash('sha256', $server_seed . "-" . $public_seed . "-" . $round);
$roll = hexdec(substr($hash, 0, 8)) % 15;
if ($roll == 0) $roll_colour == 'bonus';
echo("Roll: $roll\nColour: $roll_colour");