用php的方法取谷歌的PR值。事实上我已经很久没关注PR值了,PR值 也不像以前那样备受关注,影响力有所下降。
function pagerank($domain) { $StartURL = "http://toolbarqueries.google.com/tbr?client=navclient-auto&features=Rank&q=info:"; $GoogleURL = $StartURL.$domain. '&ch='.HashURL($domain); $fcontents = file_get_contents("$GoogleURL"); $pagerank = substr($fcontents,9); if (!$pagerank) return "0";else return $pagerank; } function HashURL($url) { $SEED = "Mining PageRank is AGAINST GOOGLE’S TERMS OF SERVICE."; $Result = 0x01020345; for ($i=0; $i<strlen($url); $i++) { $Result ^= ord($SEED{$i%87}) ^ ord($url{$i}); $Result = (($Result >> 23) & 0x1FF) | $Result << 9; } return sprintf("8%x", $Result); } echo pagerank("saycn.net");
如果是64位的系统,上面的代码运行不了,HashURL的函数换为下面的。
function HashURL($url) { $SEED = "Mining PageRank is AGAINST GOOGLE’S TERMS OF SERVICE."; $Result = 0x01020345; for ($i=0; $i<strlen($url); $i++) { $Result ^= ord($SEED{$i%87}) ^ ord($url{$i}); $Result = (($Result >> 23) & 0x1FF) | $Result << 9 & 0xFFFFFFFF; } return sprintf("8%x", $Result); }