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Direktori : /proc/self/root/home2/selectio/www/bharath/application/libraries/ |
Current File : //proc/self/root/home2/selectio/www/bharath/application/libraries/Adler32.php |
<?php if (!defined('BASEPATH')) exit('No direct script access allowed'); class Adler32 { function __construct() { } function getchecksum($MerchantId, $Amount, $OrderId, $URL, $WorkingKey) { $str = "$MerchantId|$OrderId|$Amount|$URL|$WorkingKey"; $adler = 1; $adler = $this->adler32($adler, $str); return $adler; } function genchecksum($str) { $adler = 1; $adler = $this->adler32($adler, $str); return $adler; } function verifyChecksum($getCheck, $avnChecksum) { $verify = false; if ($getCheck == $avnChecksum) $verify = true; return $verify; } function adler32($adler, $str) { $BASE = 65521; $s1 = $adler & 0xffff; $s2 = ($adler >> 16) & 0xffff; for ($i = 0; $i < strlen($str); $i++) { $s1 = ($s1 + Ord($str[$i])) % $BASE; $s2 = ($s2 + $s1) % $BASE; } return $this->leftshift($s2, 16) + $s1; } function leftshift($str, $num) { $str = DecBin($str); for ($i = 0; $i < (64 - strlen($str)); $i++) $str = "0" . $str; for ($i = 0; $i < $num; $i++) { $str = $str . "0"; $str = substr($str, 1); //echo "str : $str <BR>"; } return $this->cdec($str); } function cdec($num) { $dec = 0; for ($n = 0; $n < strlen($num); $n++) { $temp = $num[$n]; $dec = $dec + $temp * pow(2, strlen($num) - $n - 1); } return $dec; } }