PR值是google衡量網(wǎng)站的重要標(biāo)準(zhǔn)之一，根據(jù)google提供的結(jié)果獲取pr值，如：
?client=navclient-auto&features=Rank:&q=info:phpddt.com&ch=8fabc62ea

復(fù)制代碼 代碼如下:

<?php

/*
*功能:對(duì)URL進(jìn)行編碼
*參數(shù)說(shuō)明:$web_url 網(wǎng)站URL，不包含"http://"
*/
function HashURL($url)
{  
    $SEED = "Mining PageRank is AGAINST GOOGLE'S TERMS OF SERVICE. Yes, I'm talking to you, scammer.";
    $Result = 0x01020345;
    for ($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);
}

/*
*功能:根據(jù)google提供的pr查詢接口獲取pagerank
*參數(shù)說(shuō)明:$domain 網(wǎng)站域名，不包含"http://"
*/
function pagerank($domain)
{   
    $StartURL = "http://toolbarqueries.google.com/tbr?client=navclient-auto&features=Rank:&q=info:";
    $GoogleURL = $StartURL.$domain. '&ch='.HashURL($domain);
    echo $GoogleURL.'<br>';
    $fcontents = file_get_contents("$GoogleURL");
    $pagerank = substr($fcontents,9);
    if (!$pagerank) return "0";else return $pagerank;
}
echo pagerank("phpddt.com");
?>