google
代码如下：
>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; $b ^= ($a8);      $c -= $a; $c -= $b; $c ^= (zerofill($b,13));   $a -= $b; $a -= $c; $a ^= (zerofill($c,12));   $b -= $c; $b -= $a; $b ^= ($a16);   $c -= $a; $c -= $b; $c ^= (zerofill($b,5));      $a -= $b; $a -= $c; $a ^= (zerofill($c,3));       $b -= $c; $b -= $a; $b ^= ($a10);      $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($i=0;$istrlen($string);$i++) {         $result[$i] = ord($string{$i});     }     return $result; } // http://www.example.com/ - checksum: 6540747202 if (!isset($_get['url'])) {     $url_o   = $_server['http_referer']; } else {     $url_o   = $_get['url']; } $url_o = explode(?, $url_o); $url_o = $url_o[0]; $url    = 'info:'.$url_o; $ch     = googlech(strord($url)); $url    ='info:'.urlencode($url_o); $cache_filename = prcache/.urlencode($url_o)..pagerank; // check exists of cache file, if not exists, create it if(!file_exists($cache_filename) || (file_exists($cache_filename) && filemtime($cache_filename) time() - 86400)) {     $url    = http://toolbarqueries.google.com/search?client=navclient-auto&ch=6$ch&ie=utf-8&oe=utf-8&features=rank&q=$url;     $result = @file_get_contents($url);     $tmp    = @explode(:, $result);     $rank   = intval($tmp[2]);     $handle = fopen ($cache_filename, w);     flock($handle, lock_ex);     fwrite($handle, $rank);     flock($handle, lock_un);     fclose($handle); } $pagerank = @file_get_contents($cache_filename); $pagerank = 2; $width = 6 * $pagerank; $width_ = 6 * (10-$pagerank); echo document.writeln('pagerank
\/imgs/bar.gif\ width=\$width\ height=\20\>\/imgs/space.gif\ width=\$width_\ height=\20\> $pagerank
');; 以上代码保存为pagerank.php到plugins目录下。
实现步骤
一、放一个bar.gif到imgs文件夹下，为上图中的绿色图片，再放一个space.gif到imgs文件夹下，该图片是一个1*1的空白图。
二、在plugins目录下建立prcache目录，并保证该目录为apache执行用户可读写的。
三、调用方法是：
页面中，在你想要显示pagerank的地方加入如下代码
完毕！