Code source codé, on peut décoder ?

johand@horus:~$ cat bidon.php
<?php
$tmp = gzinflate(base64_decode('
lVbbbuM2EH034H8gDDWS4ziSfL/JwTZI0wIttijy
5vUGNE1ZRGRJS1G2kzT99g6pi2XFCyR6sHk5PHM4
MxzyZj67ibyoXjMv6zUE34PHYkTCNUXwz6lPcUzX
KAlEiIRHUZSsfEbQOtxiFtRrlyasND2K15Qbjdsw
EDQQ7YfniE6QoAdhRj7gpoh4mMdUOIlw26NGc1qv
ranLAmro91+/3v959/jXl/s/bvUrZB3uBt3++MvA
kiBJngQx2wSgIfaYKxBnG0/Ua24SEMHCAL1QHv7G
fN/Q8BXSVs167TXdiPaCHOTRw5oSY2Sln+RE2cdc
ZADmAmm4eRx9PTYVCQYSoJ7P7fLabOoC5v7TXs7M
/OvATnqZ1enPOA1t1bab5eVvxyb1Y/oBXbDl8+s5
FQkPAAnTb9KVJadt2UH6S1tdaaSZcgNj2wEHTvMW
Ua3vYOboYnJldzO92qpApS2sWt+VrNlslKFIMUcK
flJhXZVYP6ii8zEV9uBTMvqfUyFFg6M/osP6nDty
IYo7CyTmHD8fo5ZHtYjpfRhufHr7u6El3Iej4NNg
IzwnSHzZYwETTvmsNfOUYq7B4kcJM7I1zWY53bJB
yLeYvdDQVfx5zmX5ptIR9iuzfnzXHQ7Hv44zBGzP
Sc3nA08SlneAXM6nNrLBvcd8qsSguYMg1idyMGpJ
r4KIhfbUspaoVXTspUy80kBnqXKgNNKFkU7v5MyB
7jJjr8zYrzIO3jEOzzCSE8ZRmXFcZbStlLI0Yp+h
hCMLjjo5uNMTrzgKs7CW0zQSqmcvp1kEZK+zLC95
kiLtzvQ01DIti0GVYccdnYYp3jNBPBWnJjr5zEuE
fV/dFwSuDxQLLOgWboYYuekED5ONh+TtUSluCm/b
E7DYck59BB6ZVoFWBTheHg99CTdGFdxoWZSokmgp
2GU8Fmj1LCgKXUTSWzCmfAc3kBtyhclORC6/MDOS
ZlYlM8PzsodV3OC87EEV16/KVrB+FdZbvsP0JAaX
MN3z0rpVXOe8tE4VZ5+VZldh1ok06XSFgzgGofBY
sAHnwi0Prw28XhcezsvMzw+Bedn+xAchjUIuVDAh
uokvClP5tVmcl7f0GULCYEc5ZDCGdOZSKJNvIpwV
ZpksMEA3lMvnUyDg2SNB0kKQbCmHR9MO+4nKKnUw
4EVUqt7AGfK1oaXcRcWDjDM05lhTjc1gChKvgMBQ
q3VaGtOtLDS2BC+V6F419lap2Pk20yXvLpMNFRwH
T2mtlzZMEy2gvfSEiCamud/vr+kBbyOfXpNway5M
OYna6Naj5ClOthM06PesYW/YsTpytSQCUToL3HCi
X2uP93cPCx0Gdenj6ix0p3JVBOqF0YDu5Jt4LS96
+xaoZ6RG5M1U3H25G6Xs5pHCNRrEA4rBLwmsg7Tx
0tel5sJNA+sbpW1tFJfaVUwxJ94N8RnULifAu7TV
xokIL4jnDIDowqUYXElj5x9w2MUPR9puSGVrLGRV
dtVlJn9TQZR4IVKTaX5lI40ZRh6nrqMrrD7fMbpH
EYaEAt6ZieeNVLLspinnIHqIfPlUN/QJvJ1zUuUX
CZN1v4Cn1oq4w3AedWVf/xtMyS1MkH59Ev5rfbbi
yJzP4i0U73nEwx1bQzVcPaNc83v/gfu2CVz6z8qR
DSQwB1Kn8bjygbgxTyOGbsswucmZmVrR1WZv5mh2
8z8=
'));
echo $tmp;
?>
johand@horus:~$ php rank.php |head
?><?php
/*
    This code is released unto the public domain
*/
//header("Content-Type: text/plain; charset=utf-8");
define('GOOGLE_MAGIC', 0xE6359A60);

//unsigned shift right
function zeroFill($a, $b)
{

johan@johan:~/src/php$ php bidon.php
<?php
/*
    This code is released unto the public domain
*/
//header("Content-Type: text/plain; charset=utf-8");
define('GOOGLE_MAGIC', 0xE6359A60);

//unsigned shift right
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; $a ^= (zeroFill($c,13));
  $b -= $c; $b -= $a; $b ^= ($a<<8);
  $c -= $a; $c -= $b; $c ^= (zeroFill($b,13));
  $a -= $b; $a -= $c; $a ^= (zeroFill($c,12));
  $b -= $c; $b -= $a; $b ^= ($a<<16);
  $c -= $a; $c -= $b; $c ^= (zeroFill($b,5));
  $a -= $b; $a -= $c; $a ^= (zeroFill($c,3));
  $b -= $c; $b -= $a; $b ^= ($a<<10);
  $c -= $a; $c -= $b; $c ^= (zeroFill($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));
        $mix = mix($a,$b,$c);
        $a = $mix[0]; $b = $mix[1]; $c = $mix[2];
        $k += 12;
        $len -= 12;
    }

    $c += $length;
    switch($len)              /* all the case statements fall through */
    {
        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]);
         /* case 0: nothing left to add */
    }
    $mix = mix($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 getrank($url) {
// [url]http://www.example.com/[/url] - Checksum: 6540747202
//$url = 'info:'.$_GET['url'];
$url = 'info:'.$url;
//print("url:\t{$_GET['url']}\n");
$ch = GoogleCH(strord($url));
//printf("ch:\t6%u\n",$ch);

$file = "https://www.google.com/webhp?client=navclient-auto&gws_rd=ssl$ch&features=Rank&q=$url";
$data = file($file);
//echo $data[2];
//echo "<a href='$file'>view pagerank</a>";

$rankarray = explode (':', $data[2]);
$rank = $rankarray[2];
return $rank;
}

echo 'PageRank: '.getrank($url).'<br /><small>provided by <a href="http://www.googlecommunity.com/" target="_blank">Google Community.com</a></small>';

?>