- substr: documentation ( source)
- sha1: documentation ( source)
- hexdec: documentation ( source)
<?php
$serverSeed = "6a46a6c568e38835912c41cdf5c38812f25fb599b2160a8fbbfd772824e49e940f87bbe1f4d542a3748ab1b51cb6bd3619cf23a7a278695cae51479a4f12a9bf";
$clientSeed = "b9de60be57eb55ae5b9f2ad98226722cd91f039a";
$nonce = "0";
$seed = $serverSeed.'-'.$clientSeed.'-'.$nonce;
do {
$seed = sha1($seed);
$lucky = hexdec(substr($seed,0,8));
} while ($lucky > 4294960000);
$luckyNumber = ($lucky % 10000) / 100;
if ($luckyNumber < 0)
$luckyNumber = -$luckyNumber;
echo $luckyNumber;