03Jan Google Page Rank (PR) Checker Script

Have you ever imagined to have your own dynamic google page rank (PR) indicator for your website? Now, as a new year gift, I will expose the script to you for free. With this, you will not need to use similar services provided by third-party. The script is written in PHP and it is working fine and accurately. So, what you need to do is just copy this script into a PHP file and save it and upload it to your web server and it is ready to use.

Preview

Here are the preview of images created by this script for every PR.

If you don’t care about the script and just want to use this service, you just need to copy and paste the following code into your web page code. <a href=”http://isusx.com/google-page-rank-script/” target=”_blank” title=”Google PR Indicator by Isusx Programming Corner”><img src=”http://isusx.com/docs/programming/php/google_pr.php” alt=”Google PR Indicator by Isusx Programming Corner”/></a>

Demo

Type your URL:
(Press enter if you have finished typing your URL and wait for a moment)
Here’s the result:

Source Code

[sourcecode language="php"]<?
//By : Isusx’s Programming Corner
//URL : http://isusx.com/programming

//convert a string to a 32-bit integer
function str_to_num($str,$check,$magic){
$int32_unit = 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
if($check >= $int32_unit) {
$check -= $int32_unit * (int)($check/$int32_unit);
//if the check less than -2^31
if($check < -2147483648)
$check += $int32_unit;
}
$check += ord($str{$i});
}
return $check;
}

//generate a hash for a url
function hash_url($str){
$check1 = str_to_num($str, 0×1505, 0×21);
$check2 = str_to_num($str, 0, 0×1003F);
$check1 >>= 2;

$check1 = (($check1 >> 4) & 0×3FFFFC0 ) | ($check1 & 0×3F);
$check1 = (($check1 >> 4) & 0×3FFC00 ) | ($check1 & 0×3FF);
$check1 = (($check1 >> 4) & 0×3C000 ) | ($check1 & 0×3FFF);
$t1 = (((($check1 & 0×3C0) << 4) | ($check1 & 0×3C)) << 2) | ($check2 & 0xF0F);
$t2 = (((($check1 & 0xFFFFC000) << 4) | ($check1 & 0×3C00)) << 0xA) | ($check2 & 0xF0F0000);
return ($t1 | $t2);
}

//generate a check sum for the hash string
function check_hash($hash_num){
$check_byte = 0;
$flag = 0;
$hash_str = sprintf(’%u’, $hash_num) ;
$length = strlen($hash_str);
for($i=($length-1);$i>=0;$i–){
$re = $hash_str{$i};
if(1 === ($flag % 2)){
$re += $re;
$re = (int)($re / 10) + ($re % 10);
}
$check_byte += $re;
$flag++;
}
$check_byte %= 10;
if(0 !== $check_byte){
$check_byte = 10 - $check_byte;
if(1 === ($flag % 2)){
if(1 === ($check_byte % 2))
$check_byte += 9;
$check_byte >>= 1;
}
}
return ‘7′.$check_byte.$hash_str;
}

//return the check sum hash
function get_check_sum($url){
return check_hash(hash_url($url));
}

//return the pr for the specified url
function get_pr($url){
$google_host = ‘toolbarqueries.google.com’;
$google_user_agent = ‘Mozilla/5.0 (Windows; U; ‘;
$google_user_agent .= ‘Windows NT 5.1; en-US; rv:1.8.0.6) ‘;
$google_user_agent .= ‘Gecko/20060728 Firefox/1.5′;

$ch = get_check_sum($url);
$fp = fsockopen($google_host, 80, $errno, $errstr, 30);
if ($fp){
$out = "GET /search?client=navclient-auto&ch=$ch";
$out .= "&features=Rank&q=info:$url HTTP/1.1\r\n";
$out .= "User-Agent: $google_user_agent\r\n";
$out .= "Host: $google_host\r\n";
$out .= "Connection: Close\r\n\r\n";
fwrite($fp, $out);
while (!feof($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 $pr;
}
}
fclose($fp);
}
}

//generating image
//In this script, we are about to create a 80px x 15px image
$url = ”;
if(isset($_GET['url'])){
$url = urldecode($_GET['url']);
if(!preg_match(’/^(http:\/\/)?([^\/]+)/i’, $url))
$url = ‘http://’.$url;
}else
$url = $_SERVER['HTTP_REFERER'];

$pr = get_pr($url);

$img = imagecreatetruecolor(80,15);

$clr_red = imagecolorallocate($img,255,0,0);
$clr_white = imagecolorallocate($img,255,255,255);
$clr_green = imagecolorallocate($img,0,255,0);
$clr_blue = imagecolorallocate($img,0,0,255);

$is_na = false;
if((string)$pr == ”){
$pr = ‘N/A’;
$is_na = true;
}
imagefill($img,0,0,$clr_white);
imagerectangle($img,0,0,79,14,$clr_blue);
imagestring($img,2,4,1,’PR ‘.$pr,$clr_blue);

if(!$is_na){
for($i=0;$i<$pr;$i++){
if($i<5){
$x = ($i*9)+37;
$y = 4;
}else{
$x = (($i-5)*9)+37;
$y = 10;
}
imagefilledellipse($img,$x,$y,5,5,$clr_red);
}
}

header(’Content-type: image/jpeg’);
imagejpeg($img);
imagedestroy($img);
?>[/sourcecode]

How To Use The Script

Please follow the steps in order to use the script:

Copy and paste the script into a new file
Save the file as PHP file such as “google_pr.php”
Upload it to your web server (ex: upload to “public_html/google_pr.php”)
Put this HTML code into your web page
<img src=”your_url.com/google_pr.php” style=”border-width:1px;border-color:blue;border-style:solid”>
Make sure the src is set to the location of where you have uploaded the google PR script
It should be working now.

Copyright Note

This script is free to use and can be modified as your wish.

Related Links

About Google PR

If you like this code/script, perhaps you would kindly treat me a drink. Any number is welcome. Thanks :)