- //PageRank Lookup v1.1 by HM2K (update: 31/01/07)
- //based on an alogoritham found here: http://pagerank.gamesaga.net/
-
- //settings - host and user agent
- $googlehost='toolbarqueries.google.com';
- $googleua='Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.6) Gecko/20060728 Firefox/1.5';
-
- //字符串转换到32位整数
- function StrToNum($Str, $Check, $Magic) {
- $Int32Unit = 4294967296; // 2^32
-
- $length = strlen($Str);
- for ($i = 0; $i $Check *= $Magic;
- //If the float is beyond the boundaries of integer (usually +/- 2.15e+9 = 2^31),
- // the result of converting to integer is undefined
- // refer to http://www.php.net/manual/en/language.types.integer.php
- if ($Check >= $Int32Unit) {
- $Check = ($Check - $Int32Unit * (int) ($Check / $Int32Unit));
- //if the check less than -2^31
- $Check = ($Check }
- $Check += ord($Str{$i});
- }
- return $Check;
- }
-
- //将URL进行哈希编码
- function HashURL($String) {
- $Check1 = StrToNum($String, 0x1505, 0x21);
- $Check2 = StrToNum($String, 0, 0x1003F);
-
- $Check1 >>= 2;
- $Check1 = (($Check1 >> 4) & 0x3FFFFC0 ) | ($Check1 & 0x3F);
- $Check1 = (($Check1 >> 4) & 0x3FFC00 ) | ($Check1 & 0x3FF);
- $Check1 = (($Check1 >> 4) & 0x3C000 ) | ($Check1 & 0x3FFF);
-
- $T1 = (((($Check1 & 0x3C0) $T2 = (((($Check1 & 0xFFFFC000)
- return ($T1 | $T2);
- }
-
- //为哈希字符串生成校验码
- function CheckHash($Hashnum) {
- $CheckByte = 0;
- $Flag = 0;
-
- $HashStr = sprintf('%u', $Hashnum) ;
- $length = strlen($HashStr);
-
- for ($i = $length - 1; $i >= 0; $i --) {
- $Re = $HashStr{$i};
- if (1 === ($Flag % 2)) {
- $Re += $Re;
- $Re = (int)($Re / 10) + ($Re % 10);
- }
- $CheckByte += $Re;
- $Flag ++;
- }
-
- $CheckByte %= 10;
- if (0 !== $CheckByte) {
- $CheckByte = 10 - $CheckByte;
- if (1 === ($Flag % 2) ) {
- if (1 === ($CheckByte % 2)) {
- $CheckByte += 9;
- }
- $CheckByte >>= 1;
- }
- }
-
- return '7'.$CheckByte.$HashStr;
- }
-
- //返回pagerank哈希校验码
- function getch($url) { return CheckHash(HashURL($url)); }
-
- //返回PR值
- function getpr($url) {
- global $googlehost,$googleua;
- $ch = getch($url);
- $fp = fsockopen($googlehost, 80, $errno, $errstr, 30);
- if ($fp) {
- $out = "GET /search?client=navclient-auto&ch=$ch&features=Rank&q=info:$url HTTP/1.1\r\n";
- //echo "\n"; //debug only
- $out .= "User-Agent: $googleua\r\n";
- $out .= "Host: $googlehost\r\n";
- $out .= "Connection: Close\r\n\r\n";
-
- fwrite($fp, $out);
-
- //$pagerank = substr(fgets($fp, 128), 4); //debug only
- //echo $pagerank; //debug only
- while (!feof($fp)) {
- $data = fgets($fp, 128);
- //echo $data;
- $pos = strpos($data, "Rank_");
- if($pos === false){} else{
- $pr=substr($data, $pos + 9);
- $pr=trim($pr);
- $pr=str_replace("\n",'',$pr);
- return $pr;
- }
- }
- //else { echo "$errstr ($errno)
\n"; } //debug only - fclose($fp);
- }
- }
-
- //生成pagerank图形
- function pagerank($url,$width=40,$method='style') {
- if (!preg_match('/^(http:\/\/)?([^\/]+)/i', $url)) { $url='http://'.$url; }
- $pr=getpr($url);
- $pagerank="PageRank: $pr/10";
-
- //The (old) image method
- if ($method == 'image') {
- $prpos=$width*$pr/10;
- $prneg=$width-$prpos;
- $html='
  '; - }
- //The pre-styled method
- if ($method == 'style') {
- $prpercent=100*$pr/10;
- $html='
'; - }
-
- $out=''.$html.'';
- return $out;
- }
-
- if ((!isset($_POST['url'])) && (!isset($_GET['url']))) { echo ''; }
- if (isset($_REQUEST['url'])) { echo pagerank($_REQUEST['url']); }
- ?>
|
收藏
1
145
![ThinkPHP5实战之[教学管理系统]](https://img.php.cn/upload/course/000/000/068/6253d87459486427.png)
