| Serg0007 |
11.04.2009 02:20 |
Определить Page Rank
Задача состоит в определении пыра для очень большого количества доменов.
Раньше юзал это:
Код:
<?php
define('GOOGLE_MAGIC', 0xE6359A60);
// Èñïîëüçóåòñÿ ýòîò êëàññ, åñëè ñåðâåð èìååò ïðîáëåìû ñ ïîðàçðÿäíûìè îïåðàöèÿìè
class calc extends PageRank {
function xor32($a, $b) {
return $this->int32($a) ^ $this->int32($b);
}
//âîçâðàò íàèìåíåå çíà÷èìûå 32 áèòà
//÷òîáû ñîçäàâàòü öåëîå ÷èñëî, äàæå åñëè ìû îáåñïå÷èâàåì äâîéíóþ âåëè÷èíó
function int32($x) {
return unserialize("i:$x;");
//return intval($x); // Ýòà ñòðîêà íå ðàáîòàåò íà íåêîòîðûõ ñåðâåðàõ.
}
function mix($a,$b,$c) {
$a -= $b; $a -= $c; $a = $this->xor32($a,$this->zeroFill($c,13));
$b -= $c; $b -= $a; $b = $this->xor32($b,$a<<8);
$c -= $a; $c -= $b; $c = $this->xor32($c,$this->zeroFill($b,13));
$a -= $b; $a -= $c; $a = $this->xor32($a,$this->zeroFill($c,12));
$b -= $c; $b -= $a; $b = $this->xor32($b,$a<<16);
$c -= $a; $c -= $b; $c = $this->xor32($c,$this->zeroFill($b,5));
$a -= $b; $a -= $c; $a = $this->xor32($a,$this->zeroFill($c,3));
$b -= $c; $b -= $a; $b = $this->xor32($b,$a<<10);
$c -= $a; $c -= $b; $c = $this->xor32($c,$this->zeroFill($b,15));
return array($a,$b,$c);
}
}
//Ýòîò êëàññ äîëæåí ðàáîòàòü íà áîëüøèíñòâå ñåðâåðîâ
class PageRank {
function zeroFill($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 $mix[2];
}
//ïðåîáðàçîâûâàåò ñòðîêó â ìàññèâ
function strord($string) {
for($i=0;$i<strlen($string);$i++) {
$result[$i] = ord($string{$i});
}
return $result;
}
//âîçâðàò -1 åñëè íèêàêîé ñòðàíè÷íûé ðàíã íå áûë îáíàðóæåí
function getRank($url){
$ch = "6".$this->GoogleCH($this->strord("info:" . $url));
$pagerank=-1;
$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{
$pagerank = trim(substr($data, $pos + 9));
}
}
fclose($fp);
}
return $pagerank;
}
}
Но нужна скорость в разы больше, может кто-нить что посоветует |
