Определение индекса цитирования php
<?
function yandex($url){
$newurl = str_replace("http://","",$url);
$pcy = "http://search.yaca.yandex.ru/yca/cy/ch/".$newurl."/";
$ind = join("",File("$pcy"));
$pos = strpos($ind,"Кто ссылается");
$kusok = substr($ind,$pos);
ereg('[[:digit:]]+</a>',$kusok,$res);
if(Isset($res[0])){
$cy = str_replace("</a>","",$res[0]);
}else{
$cy = 0;
}
return $cy;
}
?>
1
Определение PageRank php
<?
define('GOOGLE_MAGIC', 0xE6359A60);
function zeroFill($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){
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 $mix[2];
}
function strord($string){
for($i=0;$i<strlen($string);$i++){
$result[$i] = ord($string{$i});
}
return $result;
}
function get_pr($url){
$result=array("",-1);
if(($url.""!="")&&($url.""!="http://")):
if(substr(strtolower($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 $result;
}
function google_pr($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);
}
?>