PHP SEO工具：获取网站收录，PR，alexa,google收录等.

PHP SEO工具，PHP SEO类，获取网站收录，PR，alexa,google收录等. 基于Snoopy.class.php

Snoopy.class.php可以到 http://snoopy.sourceforge.net/ 下载：

[PHP]代码

<?php

class SEO_RankChecker
{
    private $url;

    public function __construct($url)
    {
        $this->url = preg_replace('/http\:\/\//si', '', $url);
    }
    private function getContent($url)
    {
        $snoopy=new Snoopy();
        $snoopy->agent='Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.41 Safari/534.7';
        $snoopy->fetch($url);

        if($snoopy->status==200)
        {
            $charset='utf-8';
            $snoopy->results=strtolower($snoopy->results);
            //首先从html获取编码
            preg_match("/<meta.+?charset=[^\w]?([-\w]+)/i",$snoopy->results,$temp) ? strtolower($temp[1]):"";
            if(isset($temp[1])!="")
            {
                $charset=$temp[1]; 
            }
            else if(!empty($snoopy->headers))
            {
                //从header中获取编码
                $hstr=strtolower(implode("|||",$snoopy->headers));
                preg_match("/charset=[^\w]?([-\w]+)/is",$hstr,$lang) ? strtolower($lang[1]):"";
                if($lang[1]!="")
                {
                    $charset=$lang[1];
                }
                else
                {
                    $encode_arr=array("UTF-8","GB2312","GBK","BIG5","ASCII","EUC-JP","Shift_JIS","CP936","ISO-8859-1","JIS","eucjp-win","sjis-win");
                    $encoded=mb_detect_encoding($snoopy->results,$encode_arr);
                    if($encoded)
                    {
                        $charset=strtolower($encoded);
                    }
                }
            }
            else 
            {
                $encode_arr=array("UTF-8","GB2312","GBK","BIG5","ASCII","EUC-JP","Shift_JIS","CP936","ISO-8859-1","JIS","eucjp-win","sjis-win");
                $encoded=mb_detect_encoding($snoopy->results,$encode_arr);
                if($encoded)
                {
                    $charset=strtolower($encoded);
                }
            }

            if($charset!="utf-8" && $charset!==false)
            {
                $snoopy->results=mb_convert_encoding($snoopy->results,"UTF-8",$charset);
            }
            return $snoopy->results;
        }
        else 
        {
            return '';
        }
    }
    //获取alexa排名
    public function getAlexaRank()
    {
        $url = $this->url;
        $xml = @simplexml_load_string(file_get_contents('http://data.alexa.com/data?cli=10&url=' . $url));
        return $xml ? $xml->SD->POPULARITY['TEXT'] : '';
    }

    //如果被dmoz收录就返回dmoz的目录名称
    public function getDmoz()
    {
        $url = preg_replace('/^www\./', '', $this->url);
        $url = "http://search.dmoz.org/cgi-bin/search?search=$url";
        $data = $this->getContent($url);
        if(preg_match('<center>No <b><a href="http://dmoz\.org/">Open Directory Project</a></b> results found</center>', $data))
        {
            $value = false;
        }
        else
        {
            $value = true;
        }
        return $value;
    }

    //如果被yahoo收录就返回yahoo的目录名称
    public function getYahooDirectory()
    {
        $url = preg_replace('/^www\./', '', $this->url);
        $url = "http://search.yahoo.com/search/dir?p=$url";
        $data = $this->getContent($url);
        if(preg_match('No Directory Search results were found\.', $data)) {
            $value = false;
        } else {
            $value = true;
        }
        return $value;
    }
    //获取Baidu收录
    public function getIndexedBaidu()
    {
        $url = $this->url;
        $url = 'http://www.baidu.com/s?wd=site%3A'.urlencode($url);
        $data = $this->getContent($url);
        preg_match('/找到相关结果数([0-9\,]+)个/si', $data, $p);
        $value = isset($p[1]) ? $this->toInt($p[1]) : 0;

        return $value;
    }

    //获取google收录
    public function getIndexedGoogle()
    {
        $url = $this->url;
        $url = 'http://www.google.com/search?hl=en&safe=off&btnG=Search&q=site%3A'.urlencode($url);
        $data = $this->getContent($url);
        preg_match('/([0-9\,]+) result/si', $data, $p);
        $value = isset($p[1]) ? $this->toInt($p[1]) : 0;

        return $value;
    }

    /**
    *功能：获取Google反链 
    *时间： 2011-10-13 下午11:28:45
    */
    public function getBacklinksGoogle()
    {
        $url = $this->url;
        $url = 'http://www.google.com/search?q=link%3A'.urlencode($url);
        $data = $this->getContent($url);
        preg_match('/of about \<b\>([0-9\,]+)\<\/b\>/si', $data, $p);
        $value = isset($p[1]) ? $this->toInt($p[1]) : 0;
        return $value;
    }

    /**
    *功能：获取Yahoo反链 
    *时间： 2011-10-13 下午11:28:45
    */
    public function getBacklinksYahoo()
    {
        $url = $this->url;
        $url = 'http://siteexplorer.search.yahoo.com/search?p='.urlencode($url);
        $data = $this->getContent($url);
        preg_match('/Inlinks \(([0-9\,]+)\)/si', $data, $p);
        $value = isset($p[1]) ? $this->toInt($p[1]) : 0;
        return $value;
    }

    //获取域名年龄
    public function getAge()
    {
        $url = preg_replace('/^www\./', '', $this->url);
        $url = 'http://www.who.is/whois/'.urlencode($url);
        $data = $this->getContent($url);
        preg_match('#(?:Creation Date|Created On):\s*([a-z0-9/-]+)#si', $data, $p);
        if(!isset($p[1]))
        {
            return null;
        }
        $value = time() - strtotime($p[1]);
        return $value;
    }
//获取yahoo的收录数量
    public function getIndexedYahoo()
    {
        $url = $this->url;
        $url = 'http://siteexplorer.search.yahoo.com/search?p='.urlencode($url);
        $data = $this->getContent($url);
        preg_match('/Pages \(([0-9,]{1,})\)/im', $data, $p);
        $value = isset($p[1]) ? $this->toInt($p[1]) : 0;
        return $value;
    }
    /**
    *功能：获取PR 
    *时间： 2011-10-13 下午11:27:19
    */
    public function getPagerank()
    {
        $chwrite = $this->CheckHash($this->HashURL($this->url));

        $url="http://toolbarqueries.google.com/tbr?client=navclient-auto&ch=".$chwrite."&features=Rank&q=info:".$this->url."&num=100&filter=0";
        $data = $this->getContent($url);
        preg_match('#Rank_[0-9]:[0-9]:([0-9]+){1,}#si', $data, $p);
        $value = isset($p[1]) ? $p[1] : 0;

        return $value;
    }

    private function toInt($string)
    {
        return preg_replace('#[^0-9]#si', '', $string);
    }

    //--> for google Piwik_SEO_Ranks
    private function StrToNum($Str, $Check, $Magic)
    {
        $Int32Unit = 4294967296; // 2^32

        $length = strlen($Str);
        for($i = 0; $i < $length; $i++)
        {
            $Check *= $Magic;
            // If the float is beyond the boundaries of integer (usually +/- 2.15e+9 = 2^31),
            // the result of converting to integer is undefined
            // refer to http://www.php.net/manual/en/language.types.integer.php
            if($Check >= $Int32Unit)
            {
                $Check = ($Check - $Int32Unit * (int) ($Check / $Int32Unit));
                //if the check less than -2^31
                $Check = ($Check < -2147483648) ? ($Check + $Int32Unit) : $Check;
            }
            $Check += ord($Str{$i});
        }
        return $Check;
    }

    /*
    * Genearate a hash for a url
    */
    private function HashURL($String)
    {
        $Check1 = $this->StrToNum($String, 0x1505, 0x21);
        $Check2 = $this->StrToNum($String, 0, 0x1003F);

        $Check1 >>= 2;
        $Check1 = (($Check1 >> 4) & 0x3FFFFC0 ) | ($Check1 & 0x3F);
        $Check1 = (($Check1 >> 4) & 0x3FFC00 ) | ($Check1 & 0x3FF);
        $Check1 = (($Check1 >> 4) & 0x3C000 ) | ($Check1 & 0x3FFF);

        $T1 = (((($Check1 & 0x3C0) << 4) | ($Check1 & 0x3C)) <<2 ) | ($Check2 & 0xF0F );
        $T2 = (((($Check1 & 0xFFFFC000) << 4) | ($Check1 & 0x3C00)) << 0xA) | ($Check2 & 0xF0F0000 );

        return ($T1 | $T2);
    }

    //--> for google Piwik_SEO_Ranks
    /*
    * genearate a checksum for the hash string
    */
    private function CheckHash($Hashnum)
    {
        $CheckByte = 0;
        $Flag = 0;

        $HashStr = sprintf('%u', $Hashnum) ;
        $length = strlen($HashStr);

        for($i = $length - 1; $i >= 0; $i --)
        {
            $Re = $HashStr{$i};
            if(1 === ($Flag % 2)) {
                $Re += $Re;
                $Re = (int)($Re / 10) + ($Re % 10);
            }
            $CheckByte += $Re;
            $Flag ++;
        }

        $CheckByte %= 10;
        if(0 !== $CheckByte)
        {
            $CheckByte = 10 - $CheckByte;
            if(1 === ($Flag % 2) )
            {
                if(1 === ($CheckByte % 2))
                {
                    $CheckByte += 9;
                }
                $CheckByte >>= 1;
            }
        }

        return '7'.$CheckByte.$HashStr;
    }
}
?>