Get Google pagerank with PHP
This code will fetch the google page rank of a certain website. Just save this class below as pagerank.h then you can just include later on when you want to use it.
<?php
define(`GOOGLE_MAGIC`, 0xE6359A60);
class pageRank
{
var $pr;
function zeroFill($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);
/* 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]);
}
$mix = $this->mix($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<strlen($string);$i++)
{
$result[$i] = ord($string{$i});
}
return $result;
}
function printrank($url)
{
$ch = “6″.$this->GoogleCH($this->strord(”info:” . $url));
$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
{
$pagerank = substr($data, $pos + 9);
$this->pr_image($pagerank);
}
}
fclose($fp);
}
}
//display pagerank image. Create your own or download images I made for this script. If you make your own make sure to call them pr0.gif, pr1.gif, pr2.gif etc.
function pr_image($pagerank)
{
if($pagerank == 0){
//$this->pr = “<img src=\”images/pr0.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}elseif($pagerank == 1){
//$this->pr = “<img src=\”images/pr1.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}elseif($pagerank == 2){
//$this->pr = “<img src=\”images/pr2.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}elseif($pagerank == 3){
//$this->pr = “<img src=\”images/pr3.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}elseif($pagerank == 4){
//$this->pr = “<img src=\”images/pr4.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}elseif($pagerank == 5){
//$this->pr = “<img src=\”images/pr5.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}elseif($pagerank == 6){
//$this->pr = “<img src=\”images/pr6.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}elseif($pagerank == 7){
//$this->pr = “<img src=\”images/pr7.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}elseif($pagerank == 8){
//$this->pr = “<img src=\”images/pr8.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}elseif($pagerank == 9){
//$this->pr = “<img src=\”images/pr9.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}else{
//$this->pr = “<img src=\”images/pr10.gif\” alt=\”PageRank ” .$pagerank. ” out of 10\”>” ;
$this->pr = $pagerank;
}
}
function get_pr()
{
return $this->pr;
}
}
?>
That would be the class to get your google pagerank next is how to use it.
<?php
include("pagerank.php");
$gpr = new pageRank();
$gpr->printrank("http://www.yahoo.com");
//display image
echo $gpr->get_pr();
?>
This would return something like Pagerank 8 out of 10. Or if you have set the image it would show the image then the text. You can adjust the image by studying the pr_image function. Have fun!