PHP查询网站PR值的实现代码

2. /*
3. * 功能:对URL进行编码
4. * 参数说明:$web_url 网站URL，不包含"http://"
5. * site: bbs.it-home.org
6. */
7. function HashURL($url)
8. {
9. $SEED = "Mining PageRank is AGAINST GOOGLE'S TERMS OF SERVICE. Yes, I'm talking to you, scammer.";
10. $Result = 0x01020345;
11. for ($i=0; $i {
12. $Result ^= ord($SEED{$i%87}) ^ ord($url{$i});
13. $Result = (($Result >> 23) & 0x1FF) | $Result }
14. return sprintf("8%x", $Result);
15. }
16. /*
17. *功能:根据google提供的pr查询接口获取pagerank
18. *参数说明:$domain 网站域名，不包含"http://"
19. */
20. function pagerank($domain)
21. {
22. $StartURL = "http://toolbarqueries.google.com/tbr?client=navclient-auto&features=Rank:&q=info:";
23. $GoogleURL = $StartURL.$domain. '&ch='.HashURL($domain);
24. echo $GoogleURL.'
    ';
25. $fcontents = file_get_contents("$GoogleURL");
26. $pagerank = substr($fcontents,9);
27. if (!$pagerank) return "0";else return $pagerank;
28. }
29. echo pagerank("phpddt.com");
30. ?>

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