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代码如下: /** * blog.hd001.com google pagerank generator * * * @link: http://blog.hd001.com * @author: pasio & superspice * @version: 0.1 */ @error_reporting(e_all ^ e_notice); 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 } 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(’
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 106avascript" src="plugins/pagerank.php"> 完毕! |
责任编辑:gzu521