如何在页面上 获取Google 的 PageRank 的值

The Google Pagerank Checksum Calculator
DEMO:
http://alex.vort-x.net/google/
Source:

CODE

<?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        {            $a = ($a>>$b);        }        return $a; } function mix($a,$b,$c) {  $a -= $b; $a -= $c; $a ^= (zeroFill($c,13));  $b -= $c; $b -= $a; $b ^= ($a<<8);  $c -= $a; $c -= $b; $c ^= (zeroFill($b,13));  $a -= $b; $a -= $c; $a ^= (zeroFill($c,12));  $b -= $c; $b -= $a; $b ^= ($a<<16);  $c -= $a; $c -= $b; $c ^= (zeroFill($b,5));  $a -= $b; $a -= $c; $a ^= (zeroFill($c,3));    $b -= $c; $b -= $a; $b ^= ($a<<10);  $c -= $a; $c -= $b; $c ^= (zeroFill($b,15));  return array($a,$b,$c); } function GoogleCH($url, $length=null, $init=GOOGLE_MAGIC) {    if(is_null($length)) {        $length = sizeof($url);    }    $a = $b = 0x9E3779B9;    $c = $init;    $k = 0;    $len = $length;    while($len >= 12) {        $a += ($url[$k+0] +($url[$k+1]<<8) +($url[$k+2]<<16) +($url[$k+3]<<24));        $b += ($url[$k+4] +($url[$k+5]<<8) +($url[$k+6]<<16) +($url[$k+7]<<24));        $c += ($url[$k+8] +($url[$k+9]<<8) +($url[$k+10]<<16)+($url[$k+11]<<24));        $mix = mix($a,$b,$c);        $a = $mix[0]; $b = $mix[1]; $c = $mix[2];        $k += 12;        $len -= 12;    }    $c += $length;    switch($len)              /* all the case statements fall through */    {        case 11: $c+=($url[$k+10]<<24);        case 10: $c+=($url[$k+9]<<16);        case 9 : $c+=($url[$k+8]<<8);          /* the first byte of c is reserved for the length */        case 8 : $b+=($url[$k+7]<<24);        case 7 : $b+=($url[$k+6]<<16);        case 6 : $b+=($url[$k+5]<<8);        case 5 : $b+=($url[$k+4]);        case 4 : $a+=($url[$k+3]<<24);        case 3 : $a+=($url[$k+2]<<16);        case 2 : $a+=($url[$k+1]<<8);        case 1 : $a+=($url[$k+0]);         /* case 0: nothing left to add */    }    $mix = mix($a,$b,$c);    /*-------------------------------------------- report the result */    return $mix[2]; } //converts a string into an array of integers containing the numeric value of the char function strord($string) {    for($i=0;$i<strlen($string);$i++) {        $result[$i] = ord($string{$i});    }    return $result; } // http://www.example.com/ - Checksum: 6540747202 $url = 'info:'.$_GET['url']; $ch = GoogleCH(strord($url)); $url='info:'.urlencode($_GET['url']); $curl = curl_init("http://www.google.com/search?client=navclient-auto&ch=6$ch&ie=UTF-8&oe=UTF-8&features=Rank&q=$url"); curl_setopt ($curl, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; GoogleToolbar 2.0.110-big; Windows 2000 5.0)"); curl_exec($curl); ?>

Format:
http://www.google.com/search?client=navcli...ttp://bbs.z4.cn

Related link:
http://www.mobileread.com/forums/sh...p?threadid=1670
short :http://alex.vort-x.net/google/googlehash-source.php
readable :http://alex.vort-x.net/google/googl...able-source.php
http://forums.seochat.com/t12316/s.html
http://www.top25web.com/pagerank.php
http://www.abakus-internet-marketin...rts/seotest.htm
http://www.zenitram.th4y.com/pagerank/?url=bbs.z4.cn
http://cgi.ebay.com/ws/eBayISAPI.dl...ssPageName=WDVW
also:
http://pagerank-checksum.homelinux.com/

http://www.zenitram.th4y.com/pagerank/?url=bbs.z4.cn
Source:

CODE

<?php // Google PageRank Calculator function by ZeNiTRaM - version 0.1 // Licensed under the GPL License // eMail me at zenitram [AT] dubmail.net // Uses code from The Google Checksum Calculator, by Alex Stapleton, Andy Doctorow, Vijay "Cyberax" Bhatter, and a few others, licensed under the public domain (http://www.mobileread.com/forums/showpost.php?p=7769&postcount=87) and XMLize.php by Hans Anderson (http://www.hansanderson.com/php/xml/). // Use: $pagerank = GetPagerank("http://www.google.es"); // GetPagerank returns a STRING with the Pagerank number directly from Google //    S    P    A    N    I    S    H----------------------------------------------------------------------------------- // Calculadora Google Pagerank por ZeNiTRaM - version 0.1 // Licenciado bajo la licencia GPL. // Contacta conmigo en zenitram [AT] dubmail.net // Usa codigo de The Google Checksum Calculator, por Alex Stapleton, Andy Doctorow, Vijay "Cyberax" Bhatter, y unos cuantos otros mas, licenciado bajo dominio publico (http://www.mobileread.com/forums/showpost.php?p=7769&postcount=87) y XMLize.php por Hans Anderson (http://www.hansanderson.com/php/xml/). /* Changelog 0.1:    Started counting versions and tidied all the code. Maybe I will add some new functions to get more information from Google.    He empezado a contar versiones y limpiado un poco todo el codigo. Quizas a&ntilde;ada nuevas funciones para conseguir mas informacion de Google. */ // Function GetPagerank function GetPagerank($urlo) { define('GOOGLE_MAGIC', 0xE6359A60); $url = 'info:'.$urlo; $ch = GoogleCH(strord($url)); $chf = "6$ch"; $file = file("http://www.google.com/search?client=navclient-auto&ch=$chf&q=$url"); $file_str = implode("", $file); $xml = xmlize($file_str); $pr = $xml["GSP"]["#"]["RES"][0]["#"]["R"][0]["#"]["RK"][0]["#"]; if(!$pr) $pr = 0; return $pr; } //Starts code from XMLize.php function xmlize($data, $WHITE=1) {    $data = trim($data);    $vals = $index = $array = array();    $parser = xml_parser_create();    xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);    xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, $WHITE);    if ( !xml_parse_into_struct($parser, $data, $vals, $index) )    {    die(sprintf("XML error: %s at line %d",                    xml_error_string(xml_get_error_code($parser)),                    xml_get_current_line_number($parser)));    }    xml_parser_free($parser);    $i = 0;    $tagname = $vals[$i]['tag'];    if ( isset ($vals[$i]['attributes'] ) )    {        $array[$tagname]['@'] = $vals[$i]['attributes'];    } else {        $array[$tagname]['@'] = array();    }    $array[$tagname]["#"] = xml_depth($vals, $i);    return $array; } /* * * You don't need to do anything with this function, it's called by * xmlize.  It's a recursive function, calling itself as it goes deeper * into the xml levels.  If you make any improvements, please let me know. * * */ function xml_depth($vals, &$i) {    $children = array();    if ( isset($vals[$i]['value']) )    {        array_push($children, $vals[$i]['value']);    }    while (++$i < count($vals)) {        switch ($vals[$i]['type']) {           case 'open':                if ( isset ( $vals[$i]['tag'] ) )                {                    $tagname = $vals[$i]['tag'];                } else {                    $tagname = '';                }                if ( isset ( $children[$tagname] ) )                {                    $size = sizeof($children[$tagname]);                } else {                    $size = 0;                }                if ( isset ( $vals[$i]['attributes'] ) ) {                    $children[$tagname][$size]['@'] = $vals[$i]["attributes"];                }                $children[$tagname][$size]['#'] = xml_depth($vals, $i);            break;            case 'cdata':                array_push($children, $vals[$i]['value']);            break;            case 'complete':                $tagname = $vals[$i]['tag'];                if( isset ($children[$tagname]) )                {                    $size = sizeof($children[$tagname]);                } else {                    $size = 0;                }                if( isset ( $vals[$i]['value'] ) )                {                    $children[$tagname][$size]["#"] = $vals[$i]['value'];                } else {                    $children[$tagname][$size]["#"] = '';                }                if ( isset ($vals[$i]['attributes']) ) {                    $children[$tagname][$size]['@']                                             = $vals[$i]['attributes'];                }                        break;            case 'close':                return $children;            break;        }    }    return $children; } /* function by acebone@f2s.com, a HUGE help! * * this helps you understand the structure of the array xmlize() outputs * * usage: * traverse_xmlize($xml, 'xml_'); * print '<pre>' . implode("", $traverse_array . '</pre>'; * * */ function traverse_xmlize($array, $arrName = "array", $level = 0) {    foreach($array as $key=>$val)    {        if ( is_array($val) )        {            traverse_xmlize($val, $arrName . "[" . $key . "]", $level + 1);        } else {            $GLOBALS['traverse_array'][] = '$' . $arrName . '[' . $key . '] = "' . $val . "/"/n";        }    }    return 1; } //Ends code from XMLize.php //Starts code from The Google Checksum Calculator //unsigned shift right function zeroFill($a, $b) {    $z = hexdec(80000000);        if ($z & $a)        {            $a = ($a>>1);            $a &= (~$z);            $a |= 0x40000000;            $a = ($a>>($b-1));        }        else        {            $a = ($a>>$b);        }        return $a; } function mix($a,$b,$c) {  $a -= $b; $a -= $c; $a ^= (zeroFill($c,13));  $b -= $c; $b -= $a; $b ^= ($a<<8);  $c -= $a; $c -= $b; $c ^= (zeroFill($b,13));  $a -= $b; $a -= $c; $a ^= (zeroFill($c,12));  $b -= $c; $b -= $a; $b ^= ($a<<16);  $c -= $a; $c -= $b; $c ^= (zeroFill($b,5));  $a -= $b; $a -= $c; $a ^= (zeroFill($c,3));    $b -= $c; $b -= $a; $b ^= ($a<<10);  $c -= $a; $c -= $b; $c ^= (zeroFill($b,15));  return array($a,$b,$c); } function GoogleCH($url, $length=null, $init=GOOGLE_MAGIC) {    if(is_null($length)) {        $length = sizeof($url);    }    $a = $b = 0x9E3779B9;    $c = $init;    $k = 0;    $len = $length;    while($len >= 12) {        $a += ($url[$k+0] +($url[$k+1]<<8) +($url[$k+2]<<16) +($url[$k+3]<<24));        $b += ($url[$k+4] +($url[$k+5]<<8) +($url[$k+6]<<16) +($url[$k+7]<<24));        $c += ($url[$k+8] +($url[$k+9]<<8) +($url[$k+10]<<16)+($url[$k+11]<<24));        $mix = mix($a,$b,$c);        $a = $mix[0]; $b = $mix[1]; $c = $mix[2];        $k += 12;        $len -= 12;    }    $c += $length;    switch($len)              /* all the case statements fall through */    {        case 11: $c+=($url[$k+10]<<24);        case 10: $c+=($url[$k+9]<<16);        case 9 : $c+=($url[$k+8]<<8);          /* the first byte of c is reserved for the length */        case 8 : $b+=($url[$k+7]<<24);        case 7 : $b+=($url[$k+6]<<16);        case 6 : $b+=($url[$k+5]<<8);        case 5 : $b+=($url[$k+4]);        case 4 : $a+=($url[$k+3]<<24);        case 3 : $a+=($url[$k+2]<<16);        case 2 : $a+=($url[$k+1]<<8);        case 1 : $a+=($url[$k+0]);         /* case 0: nothing left to add */    }    $mix = mix($a,$b,$c);    /*-------------------------------------------- report the result */    return $mix[2]; } //converts a string into an array of integers containing the numeric value of the char function strord($string) {    for($i=0;$i<strlen($string);$i++) {        $result[$i] = ord($string{$i});    }    return $result; } //End code from The Google Checksum Calculator ?>

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