Как определить PR странички?

Я смотрю вы настойчиво создаете новые темы:

/ru/forum/403057

/ru/forum/402893

Надеюсь этого рабочего примера более чем достаточно:

<?php
error_reporting(E_ALL ^ E_NOTICE);

//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';

//convert a string to a 32-bit integer
function StrToNum($Str, $Check, $Magic) {
  $Int32Unit = 4294967296;  // 2^32

  $length = strlen($Str);
  for ($i = 0; $i < $length; $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 < -2147483648) ? ($Check + $Int32Unit) : $Check;
      }
      $Check += ord($Str{$i});
  }
  return $Check;
}

//genearate a hash for a url
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) << 4) | ($Check1 & 0x3C)) <<2 ) | ($Check2 & 0xF0F );
  $T2 = (((($Check1 & 0xFFFFC000) << 4) | ($Check1 & 0x3C00)) << 0xA) | ($Check2 & 0xF0F0000 );

  return ($T1 | $T2);
}

//genearate a checksum for the hash string
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;
}

//return the pagerank checksum hash
function getch($url) { return CheckHash(HashURL($url)); }

//return the pagerank figure
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:$url HTTP/1.1\r\n";
  //echo "<pre>$out</pre>\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 ($errno)<br />\n"; } //debug only
  fclose($fp);
}
}

//generate the graphical pagerank
function pagerank($url,$width=40,$method='style') {
if (!preg_match('/^(http:\/\/)?([^\/]+)/i', $url)) { $url='http://'.$url; }
$pr=getpr($url);
$pagerank="$pr";

//The (old) image method
if ($method == 'image') {
$prpos=$width*$pr/10;
$prneg=$width-$prpos;
$html='<img src="http://www.google.com/images/pos.gif" width='.$prpos.' height=4 border=0 alt="'.$pagerank.'"><img src="http://www.google.com/images/neg.gif" width='.$prneg.' height=4 border=0 alt="'.$pagerank.'">';
}
//The pre-styled method
if ($method == 'style') {
$prpercent=100*$pr/10;
$html='<div style="position: relative; width: '.$width.'px; padding: 0; background: #D9D9D9;"><strong style="width: '.$prpercent.'%; display: block; position: relative; background: #5EAA5E; text-align: center; color: #333; height: 4px; line-height: 4px;"><span></span></strong></div>';
}

$out=''.$pagerank.'';
return $out;
}

if ((!isset($_POST['url'])) && (!isset($_GET['url']))) { echo '<form action="" method="post"><input name="url" type="text"><input type="submit" name="Submit" value="Узнать PageRank"></form>'; }
if (isset($_REQUEST['url'])) {
echo pagerank($_REQUEST['url']);
}
?>

<?php
define('GOOGLE_MAGIC', 0xE6359A60);
function zeroFill($a, $b)
{
    $z = hexdec(80000000);
        if ($z & $a)
        {
            $a = ($a>>1);
            $a &= (~$z);
            $a |= 0x40000000;
            $a = (($a&0xffffffff)>>($b-1));
        }
        else
        {
            $a = (($a&0xffffffff)>>$b);
        }
        return $a;
}

function mix($a,$b,$c) {
$a -= $b; $a -= $c; $a ^= (zeroFill($c,13)); $a=(((0xffffffff-$a)&0xffffffff)+1)*(-1);
$b -= $c; $b -= $a; $b ^= ($a<<8)&0xffffffff;
$c -= $a; $c -= $b; $c ^= (zeroFill($b,13)); $c=(((0xffffffff-$c)&0xffffffff)+1)*(-1);
$a -= $b; $a -= $c; $a ^= (zeroFill($c,12)); $a=(((0xffffffff-$a)&0xffffffff)+1)*(-1);
$b -= $c; $b -= $a; $b ^= ($a<<16)&0xffffffff;
$c -= $a; $c -= $b; $c ^= (zeroFill($b,5)); $c=(((0xffffffff-$c)&0xffffffff)+1)*(-1);
$a -= $b; $a -= $c; $a ^= (zeroFill($c,3)); $a=(((0xffffffff-$a)&0xffffffff)+1)*(-1);
$b -= $c; $b -= $a; $b ^= ($a<<10)&0xffffffff;
$c -= $a; $c -= $b; $c ^= (zeroFill($b,15)); $c=(((0xffffffff-$c)&0xffffffff)+1)*(-1);

  return array($a,$b,$c);
}

function strord($string) {
    for($i=0;$i<strlen($string);$i++) {
        $result[$i] = ord($string{$i});
    }
    return $result;
}

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)
    {
        case 11: $c+=($url[$k+10]<<24);
        case 10: $c+=($url[$k+9]<<16);
        case 9 : $c+=($url[$k+8]<<8);
        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]);
    }
    $mix = mix($a,$b,$c);
    return $mix[2];
	}

function google_pr($url){
    $url = 'info:'.$url;
    $ch = GoogleCH(strord($url));
    $url = "http://toolbarqueries.google.com/search?client=navclient-auto&ch=6$ch&features=Rank&q=$url";
	if( $file = @file($url) ){
	    $content = implode($file);
	    if(empty($content)){
	        $num = 0;
	    }else{
	        $GrabData = eregi("Rank_1:1:(.*)\n", $content, $DataPrint);
	        $info =  $DataPrint[1];
	        $num = $info;
	    }
	}
	else{
		$num = '';
	}
    return $num;
}
?>

P.S. Не ленитесь искать, все это было.;) Всего доброго.

madwat, Спасибо Вам огромное.

Я искал, и по инету, и здесь, только попадал на сервисы, а код найти не мог.