PHP code to get PR value_PHP tutorial

Use C# to write a software. I don’t know Google’s interface and it feels too troublesome to write it in C#

So I downloaded a code from csdn and changed it to an interface for software query.

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

Code

$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));

$googlePRRUrl =

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

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

$pr_str = retrieveURLContent($googlePRRUrl,$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

$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);

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

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

$b = bigxor($b,trunkbitForce32bit($a<<16));

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

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

$c = bigxor($c,(zeroFill($b,5))); $c = trunkbitForce32bit($c);

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

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

$a = bigxor($a,(zeroFill($c,3)));$a = trunkbitForce32bit($a);

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

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

$b = bigxor($b,trunkbitForce32bit($a<<10));

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

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

$c = bigxor($c,(zeroFill($b,15))); $c = trunkbitForce32bit($c);

return array($a,$b,$c);

}

function NewGCH($ch){

$ch = ( trunkbitForce32bit( ( $ch / 7 ) << 2 ) |

( ( myfmod( $ch,13 ) ) & 7 ) );

$prbuf = array();

$prbuf[0] = $ch;

for( $i = 1; $i < 20; $i++ )

{

$prbuf[$i] = $prbuf[$i-1] - 9;

}

$ch = GCH( c32to8bit( $prbuf ) );

return $ch;

}

function myfmod($x,$y){

$i = floor( $x / $y );

return ( $x - $i * $y );

}

function c32to8bit($arr32){

$arr8 = array();

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 GCH($url, $length=null){

if(is_null($length)) {

$length = sizeof($url);

}

$init = 0xE6359A60;

$a = 0x9E3779B9;

$b = 0x9E3779B9;

$c = 0xE6359A60;

$k = 0;

$len = $length;

$mixo = array();

while( $len >= 12 ){

$a += ($url[$k+0] +trunkbitForce32bit($url[$k+1]<<8)

+trunkbitForce32bit($url[$k+2]<<16)

+trunkbitForce32bit($url[$k+3]<<24));

$b += ($url[$k+4] +trunkbitForce32bit($url[$k+5]<<8)

+trunkbitForce32bit($url[$k+6]<<16)

+trunkbitForce32bit($url[$k+7]<<24));

$c += ($url[$k+8] +trunkbitForce32bit($url[$k+9]<<8)

+trunkbitForce32bit($url[$k+10]<<16)

+trunkbitForce32bit($url[$k+11]<<24));

$mixo = mix($a,$b,$c);

$a = $mixo[0]; $b = $mixo[1]; $c = $mixo[2];

$k += 12;

$len -= 12;

}

$c += $length;

switch( $len ) {

case 11:

$c += trunkbitForce32bit($url[$k+10]<<24);

case 10:

$c+=trunkbitForce32bit($url[$k+9]<<16);

case 9 :

$c+=trunkbitForce32bit($url[$k+8]<<8);

case 8 :

$b+=trunkbitForce32bit($url[$k+7]<<24);

case 7 :

$b+=trunkbitForce32bit($url[$k+6]<<16);

case 6 :

$b+=trunkbitForce32bit($url[$k+5]<<8);

case 5 :

$b+=trunkbitForce32bit($url[$k+4]);

case 4 :

$a+=trunkbitForce32bit($url[$k+3]<<24);

case 3 :

$a+=trunkbitForce32bit($url[$k+2]<<16);

case 2 :

$a+=trunkbitForce32bit($url[$k+1]<<8);

case 1 :

$a+=trunkbitForce32bit($url[$k+0]);

}

$mixo = mix( $a, $b, $c );

$mixo[2] = trunkbitForce32bit($mixo[2]);

if( $mixo[2] < 0 ){

return (

hexdec('1'.

implode('',

array_fill(0,PHP_INT_SIZE*2,'0')))

+ $mixo[2] );

}

else{

return $mixo[2];

}

}

// converts a string into an array of integers

// containing the numeric value of the char

function strord($string){

for($i=0;$i

$result[$i] = ord($string{$i});

}

return $result;

}

// return url page content or false if failed.

function retrieveURLContent($url,$gettype){

switch($gettype){

case G_PR_GET_TYPE_FILE:

return retrieveURLContentByFile($url);

break;

default:

return retrieveURLContentBySocket($url);

break;

}

}

function retrieveURLContentByFile($url){

$fd = @fopen($url,"r");

if(!$fd){

return false;

} www.2cto.com

$result = "";

while($buffer = fgets($fd, 4096)) {

$result .= $buffer;

}

fclose($fd);

return $result;

}

function retrieveURLContentBySocket($url,

$host="",

$port=80,

$timeout=30){

if($host == ""){

if(!($pos = strpos($url,'://'))){

return false;

}

$host = substr( $url,

$pos+3,

strpos($url,'/',$pos+3) - $pos - 3);

$uri = substr($url,strpos($url,'/',$pos+3));

}

else{

$uri = $url;

}

$request = "GET ".$uri." HTTP/1.0rn"

."Host: ".$host."rn"

."Accept: */*rn"

."User-Agent: ZealGetrn"

."rn";

$sHnd = @fsockopen ($host, $port, $errno, $errstr, $timeout);

if(!$sHnd){

return false;

}

@fputs ($sHnd, $request);

// Get source

$result = "";

while (!feof($sHnd)){

$result .= fgets($sHnd,4096);

}

fclose($sHnd);

$headerend = strpos($result,"rnrn");

if (is_bool($headerend))

{

return $result;

}

else{

return substr($result,$headerend+4);

}

}

echo getPR($url);

?>

摘自Shine的圣天堂-〃敏〃