最近对google的PageRank比较感兴趣,一直想知道如何不用google toolbar来获取pr值。用嗅探工具获得google toolbar发出请求的url为:http://toolbarqueries.google.com//search?client=navclient-auto&ch=64170410360&ie=UTF-8&oe=UTF-8&features=Rank:FVN&q=info:http%3A//www.ugia.cn,其中的关键部分为ch=64170410360,即CheckSum,不知道这个是用的什么算法得出来的。
苦苦搜索之后,找到如下代码:
转自: http://meese.ath.cx/google via 思路(http://silu.spirezone.com)
<?php
/**
This code is released unto the public domain
*/
//header("Content-Type: text/plain; charset=utf-8");
define('GOOGLE_MAGIC', 0xE6359A60);
//unsigned shift right
function zeroFill($a, $b)
{
$z = hexdec(80000000);
if ($z & $a)
{
$a = ($a>>1);
$a &= (~$z);
$a |= 0x40000000;
$a = ($a>>($b-1));
}
else
{
&nb
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