PHP获取PR值的代码

用C#写个软件，不知道谷歌的接口用C#写感觉太麻烦了

于是在csdn下载了一份代码，改成用软件查询的接口。

http://www.xssxss.com/pr.php?url=www.google.com

代码

<?php

$url= $_GET['url'];

// url get method macro.

define('G_PR_GET_TYPE_FILE', 1); // use fopen() function

define('G_PR_GET_TYPE_SOCKET', 2); // use standard fsocketopen function

// main function to be called

function getPR($_url,$gettype=G_PR_GET_TYPE_SOCKET){

$url = 'info:'.$_url;

$ch = GCH(strord($url));

$ch = NewGCH($ch);

$url=str_replace("_","%5F",'info:'.urlencode($_url));

$googlePRUrl =

"http://toolbarqueries.google.com/tbr?client=navclient-auto&ch=6"

.$ch."&ie=UTF-8&oe=UTF-8&features=Rank&q=".$url;

$pr_str = retrieveURLContent($googlePRUrl,$gettype);

return substr($pr_str,strrpos($pr_str, ":")+1);

}

//unsigned shift right

function zeroFill($a, $b){

$z = hexdec('8'.implode('',array_fill(0,PHP_INT_SIZE*2-1,'0')));

if ($z & $a){

$a = ($a>>1);

$a &= (~$z);

$a |= hexdec('4'.implode('',array_fill(0,PHP_INT_SIZE*2-1,'0')));

$a = ($a>>($b-1));

}

else{

$a = ($a>>$b);

}

return $a;

}

// discard bits beyonds 32 bit.

function trunkbitForce32bit($n){

if(PHP_INT_SIZE <= 4){

settype($n,'float');

if ( $n < 0 ) $n += 4294967296;

return $n;

}

else{

$clearbit = '';

for($i=0;$i<PHP_INT_SIZE-4;$i++){

$clearbit .= '00';

}

for($i=0;$i<4;$i++){

$clearbit .= 'ff';

}

return ($n & hexdec($clearbit));

}

}

function bigxor($m,$n){

//if(function_exists('gmp_init')){

// return floatval(gmp_strval(gmp_xor($m,$n)));

//}

//else{

return $m ^ $n;

//}

}

function mix($a,$b,$c){

$a = trunkbitForce32bit($a);

$b = trunkbitForce32bit($b);

$c = trunkbitForce32bit($c);

$a -= $b; $a = trunkbitForce32bit($a);

$a -= $c; $a = trunkbitForce32bit($a);

$a = bigxor($a,(zeroFill($c,13))); $a = trunkbitForce32bit($a);

$b -= $c; $b = trunkbitForce32bit($b);

$b -= $a; $b = trunkbitForce32bit($b);

$b = bigxor($b,trunkbitForce32bit($a<<8)); $b = trunkbitForce32bit($b);

$c -= $a; $c = trunkbitForce32bit($c);

$c -= $b; $c = trunkbitForce32bit($c);

$c = bigxor($c,(zeroFill($b,13))); $c = trunkbitForce32bit($c);

$a -= $b;$a = trunkbitForce32bit($a);

$a -= $c;$a = trunkbitForce32bit($a);

$a = bigxor($a,(zeroFill($c,12)));$a = trunkbitForce32bit($a);