Simple PageRank Retrieval

This is a simple script that will retrieve the Google PageRank of any given website.

<?php
	define('GOOGLE_MAGIC', 0xE6359A60);
	class pagerank extends pagerank32 {
		function xor32 ($a, $b) {
			return $this->int32($a) ^ $this->int32($b);
		}
		function int32 ($x) {
			return unserialize("i:$x;");
		}
		function mix ($a,$b,$c) {
			$a -= $b; $a -= $c; $a = $this->xor32($a, $this->zeroFill($c, 13));
			$b -= $c; $b -= $a; $b = $this->xor32($b, $a << 8);
			$c -= $a; $c -= $b; $c = $this->xor32($c, $this->zeroFill($b, 13));
			$a -= $b; $a -= $c; $a = $this->xor32($a, $this->zeroFill($c, 12));
			$b -= $c; $b -= $a; $b = $this->xor32($b, $a << 16);
			$c -= $a; $c -= $b; $c = $this->xor32($c, $this->zeroFill($b, 5));
			$a -= $b; $a -= $c; $a = $this->xor32($a, $this->zeroFill($c, 3));
			$b -= $c; $b -= $a; $b = $this->xor32($b, $a << 10);
			$c -= $a; $c -= $b; $c = $this->xor32($c, $this->zeroFill($b, 15));
			return array($a, $b, $c);
		}
	}
	class pagerank32 {
		function zeroFill ($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; $a ^= ($this->zeroFill($c, 13));
			$b -= $c; $b -= $a; $b ^= ($a << 8);
			$c -= $a; $c -= $b; $c ^= ($this->zeroFill($b, 13));
			$a -= $b; $a -= $c; $a ^= ($this->zeroFill($c, 12));
			$b -= $c; $b -= $a; $b ^= ($a << 16);
			$c -= $a; $c -= $b; $c ^= ($this->zeroFill($b, 5));
			$a -= $b; $a -= $c; $a ^= ($this->zeroFill($c, 3));
			$b -= $c; $b -= $a; $b ^= ($a << 10);
			$c -= $a; $c -= $b; $c ^= ($this->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 = $this->mix($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 = $this->mix($a, $b, $c);
			return $mix[2];
		}
		function strord ($string) {
			for($ i= 0; $i < strlen($string); $i++) {
				$result[$i] = ord($string{$i});
			}
			return $result;
		}
		function pagerank ($url){
			$ch = '6' . $this->GoogleCH($this->strord("info:$url"));
			$pagerank = 0;
			$fp = fsockopen('www.google.com', 80, $errno, $errstr, 30);
			if (!$fp) {
				echo "$errstr ($errno)<br />\n";
			} else {
				$out = "GET /search?client=navclient-auto&ch=" . $ch .  "&features=Rank&q=info:" . $url . " HTTP/1.1\r\n" ;
				$out .= "Host: www.google.com\r\n" ;
				$out .= "Connection: Close\r\n\r\n" ;
				fwrite($fp, $out);
				while (!feof($fp)) {
					$data = fgets($fp, 128);
					$pos = strpos($data, "Rank_");
					if($pos === false){
					}else{
					$pagerank = trim(substr($data, $pos + 9));
					}
				}
				fclose($fp);
			}
			echo $pagerank;
		}
	}
	$pr = new pagerank('http://www.google.com');
?>

PHP:

Simply paste the code into your website. To call the PageRank at any time, use this code:

$pr = new pagerank('http://www.google.com');

PHP:

Just remember to replace http://www.google.com with the desired website.

Please leave comments / + rep if you enjoyed this contribution

 

So using this script we won't need any Google API key.

Right?

And if we query the G without AP key will it be any good?

 

Yup, no API key required. It'll work fine

 

Should I replace every www.google.com ( which are in php code also ?)

 

NO. Only the one in the call section ($pr = new pagerank('http://www.google.com'); ).

 

Sweet. I have an open domain I could possibly use this script on. Thanks for sharing.

 

Any live demo you have - I would like to see before installing on my site

 

Setting up a quick demo in a bit. Give me some time, PHP just got removed from my server by accident

 

NICE script.. i am waiting for a demo...

 

Doesn't work on my server. and theres an error on line 85, ($ i)

 

Whoops!

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

PHP:

Please replace that with:

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

PHP:

 

If it does not work on your server it is because google has blocked your server from querying there pr server.

 

I cant get it to work, when i add on line 102 "echo $data"; i can see the 403 access deny sign.

 

Nope, it doesnt work on my local machine, nor my server, other pr scripts do.....

 

I am using a similar script on my site here:

http://webdirectorylist.smashingdir.com

It might even be the same one - or probably uses the same hackery anyways.