PHP Script – Google Page Rank (PR) Checker

Have you ever imagined to have your own dynamic Google page rank (PR) checker for your website? Now, we 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.

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.

Demo

Type your page URL:

Here’s the result:

Source Code

<?php
    //By    : Xhanch Studio
    //URL   : http://xhanch.com/

    //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, 0x1505, 0x21);
        $check2 = str_to_num($str, 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);
    }

    //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);
?>

How To Use The Script

Please follow the steps in order to use the script:

1. Copy and paste the script into a new file
2. Save the file as PHP file such as “google_pr.php”
3. Upload it to your web server (ex: upload to “public_html/google_pr.php”)
4. 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
5. It should be working now.

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