Google PR值的PHP實作程式碼-php教程-PHP中文網

Google PR值的PHP實作程式碼

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發布： 2016-07-25 08:57:49

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//HM2K 的PageRank Lookup v1.1（更新：31/01/07）
//基於發現的演算法此處：http://pagerank.gamesaga.net/
//設定- 主機與使用者代理程式
$googlehost='toolbarqueries.google.com';
$ua='Mozilla/5.0 (google Windows; U; Windows NT 5.1; en-US; rv:1.8.0.6) Gecko/20060728 Firefox/1.5';
//字串轉換為32位元整數
function StrToNum($Str ,ToNum($Str ,ToNum($Str ,ToNum($Str ,ToNum($Str ,ToNum($Str ,ToNum($Str ,ToNum($Str ,ToNum($Str),ToNum($Str ,ToNum($Str ,ToNum($Str) $Check, $Magic) {
$Int32Unit = 4294967296; // 2^32
$length = strlen($Str);
for ($i = 0; $i $Check *= $Magic ;
//如果浮點數超出整數範圍（通常為+/- 2.15e+9 = 2^31），
// 轉換為整數的結果是未定義的
// 參考http ://www.php.net/manual/en/language.types.integer.php
if ($Check >= $Int32Unit) {
$檢查 = ($Check - $Int32Unit * (int) ($Check / $Int32Unit));
//如果支票小於-2^31
$Check = ($Check }
$Check += ord($Str{$i});
}
return $Check;
}
//將URL進行空間編碼
function HashURL($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 | $T2);
}
//為雜湊字串產生校驗碼
function CheckHash($雜湊值) {
$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.$HashStr;
}
//返回pagerank哈希校驗碼
function getch($ 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/1.1rn";
// echo "
```
$out
```
登入後複製
n"; //僅調試
$out .= "用戶代理: $googleuarn";
$out .= "主機: $googlehostrn";
$out .= "連接: Closernrn";
fwrite($fp, $out);
//$pagerank = substr(fgets($fp, 128), 4); / /僅調試
//echo $pagerank; //僅調試
while (!feof($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 ($errno)
n"; } //僅調試
fclose($fp);
}
}
//生成pagerank圖形
function pagerank($url,$width=40,$method= '風格') {
if (!preg_match('/^(http://)?([^/]+)/ i', $url)) { $url='http://'.$網址； }
$pr=getpr($url);
$pagerank="PageRank: $pr/10";
//（舊）圖像方法
if ($method = = '圖片') {
$prpos=$width*$pr/10;
$prneg=$width-$ prpos;
$html='';
}
//預樣式方法
if ($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']); }
?>