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Скрипт для определения PageRank |  |
Скрипт забирает показания PageRank со страницы, подготовленной гуглом для Гуглобара.
<? 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 $result; }
function get_pr($url) { $result=array("",-1);
if (($url.""!="")&&($url.""!="http://")): // check for protocol if (substr(strtolower($url),0,7)!="http://"): $url="http://".$url; endif;
$url="info:".$url; $checksum=GoogleCH(strord($url)); $google_url=sprintf("http://www.google.com/search?client=navclient-auto&ch=6%u&features=Rank&q=".$url,$checksum); // url to get from google
$contents="";
$handle = fopen($google_url, "rb"); $contents = ''; while (!feof($handle)) { $contents.= fread($handle, 8192); } fclose($handle); $p=explode(":",$contents); if (isset($p[2])): $result[1]=$p[2]; endif; endif;
return $result; }
function getPR_url($url) { global $db;
if (eregi('^http://www.',$url)) { $url_www = str_replace('http://www.','http://',$url); } else { $url_www = str_replace('http://','http://www.',$url); }
$pr=get_pr($url); $output=$pr[0]; $pagerank=$pr[1]; sleep(1); $pr=get_pr($url_www); $output_www=$pr[0]; $pagerank_www=$pr[1];
if ($pagerank<$pagerank_www) { $pagerank=$pagerank_www; } if ($pagerank==-1) { $pagerank=0; } return intval($pagerank); } echo $_GET['url'].' '.getPR_url($_GET['url']); ?>

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