//---------------------------------------------------------------------
// GOOGLE PageRank functions
//
define('GOOGLE_MAGIC', 0xE6359A60);
function toInt32(& $x)
{
$z = hexdec(80000000);
$y = (int)$x;
// on 64bit OSs if $x is double, negative ,will return -$z in $y
// which means 32th bit set (the sign bit)
if ($y==-$z && $x<-$z) {
$y = (int)((-1)*$x);// this is the hack, make it positive before
$y = (-1)*$y; // switch back the sign
}
$x = $y;
}
function zeroFill($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 -= $c; toInt32($a); $a = (int)($a ^ (zeroFill($c,13)));
$b -= $c; $b -= $a; toInt32($b); $b = (int)($b ^ ($a<<8));
$c -= $a; $c -= $b; toInt32($c); $c = (int)($c ^ (zeroFill($b,13)));
$a -= $b; $a -= $c; toInt32($a); $a = (int)($a ^ (zeroFill($c,12)));
$b -= $c; $b -= $a; toInt32($b); $b = (int)($b ^ ($a<<16));
$c -= $a; $c -= $b; toInt32($c); $c = (int)($c ^ (zeroFill($b,5)));
$a -= $b; $a -= $c; toInt32($a); $a = (int)($a ^ (zeroFill($c,3)));
$b -= $c; $b -= $a; toInt32($b); $b = (int)($b ^ ($a<<10));
$c -= $a; $c -= $b; toInt32($c); $c = (int)($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) {
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]);
}
$mix = mix($a,$b,$c);
return ($mix[2] < 0 ) ? (4294967296 + $mix[2]) : $mix[2];
}
function strord($string)
{
for($i=0;$i<strlen($string);$i++) {
$result[$i] = ord($string{$i});
}
return $result;
}
function c32to8bit($arr32)
{
for($i=0;$i<count($arr32);$i++) {
for ($bitOrder=$i*4;$bitOrder<=$i*4+3;$bitOrder++) {
$arr8[$bitOrder]=$arr32[$i]&255;
$arr32[$i]=zeroFill($arr32[$i], 8);
}
}
return $arr8;
}
function GoogleNewCH($ch)
{
$ch = ((($ch/7) << 2) | (((int)fmod($ch,13))&7));
$prbuf = array();
$prbuf[0] = $ch;
for($i = 1; $i < 20; $i++) {
$prbuf[$i] = $prbuf[$i-1]-9;
}
$ch = GoogleCH(c32to8bit($prbuf), 80);
return $ch;
}
function GooglePageRank($url)
{
$url = 'info:' . $url;
$ch = GoogleCH(strord($url));
$ch = "6".GoogleNewCH($ch);
$q = "http://toolbarqueries.google.com/search?client=navclient-auto&ch=".$ch."&ie=UTF-8&oe=UTF-8&features=Rank&q=".$url;
// CURL kullanımı: http://www.phptrcms.com/makale-oku/176-Php+ve+Curl
// Eğer CURL yüklü ise
if (extension_loaded('curl')) {
$header[] = "User-Agent: Mozilla/4.0 (compatible; GoogleToolbar 2.0.114-big; Windows XP 5.1)\r\n";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$q);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_POST, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
$returned = curl_exec($ch);
curl_close ($ch); // CURL oturumu kapat
}
// CURL yüklü değil ise
else {
$returned = file_get_contents($q);
}
preg_match("/Rank_.*?:.*?:(\d+)/i", $returned, $matches);
return isset($matches[1]) ? $matches[1] : 0;
}
//
// GOOGLE PageRank functions
//---------------------------------------------------------------------kullanımı:$pagerank = GooglePageRank($website);
