php实现专业获取网站SEO信息类实例_php技巧

<?php/** * * SEO report for different metrics * * @category SEO * @author Chema  * @copyright (c) 2009-2012 Open Classifieds Team * @license GPL v3 * Based on seo report script http://www.phpeasycode.com && PHP class SEOstats * */class seoreport{  /**   *   * check if a url is online/alive   * @param string $url   * @return bool   */  public static function is_alive($url)  {    $ch = curl_init();    curl_setopt($ch, CURLOPT_URL, $url);    curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);    curl_setopt($ch, CURLOPT_HEADERFUNCTION, 'curlHeaderCallback');    curl_setopt($ch, CURLOPT_FAILONERROR, 1);    curl_exec ($ch);    $int_return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);    curl_close ($ch);    if ($int_return_code != 200 && $int_return_code != 302 && $int_return_code != 304)    {      return FALSE;    }    else return TRUE;  }  /**   * HTTP GET request with curl.   *   * @param string $url String, containing the URL to curl.   * @return string Returns string, containing the curl result.   *   */  protected static function get_html($url)  {    $ch = curl_init($url);    curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);    curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,5);    curl_setopt($ch,CURLOPT_FOLLOWLOCATION,1);    curl_setopt($ch,CURLOPT_MAXREDIRS,2);    if(strtolower(parse_url($url, PHP_URL_SCHEME)) == 'https')    {      curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,1);      curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,1);    }    $str = curl_exec($ch);    curl_close($ch);    return ($str)?$str:FALSE;  }  /**   *   * get the domain from any URL   * @param string $url   */  public static function domain_name($url)  {    $nowww = ereg_replace('www\.','',$url);    $domain = parse_url($nowww);    if(!empty($domain["host"]))      return $domain["host"];    else      return $domain["path"];  }  /**   *   * get the metas from a url and the language of the site   * @param string $url   * @return array   */  public static function meta_info($url)  {    //doesn't work at mediatemple    /*$html = new DOMDocument();    if(!$html->loadHtmlFile($url))      return FALSE;*/    if (!$html_content = self::get_html($url))        return FALSE;    $html =<i style="color:transparent">@本文来源gaodai$ma#com搞$代*码6网</i><b>搞代gaodaima码</b> new DOMDocument();    $html->loadHtml($html_content);           $xpath = new DOMXPath( $html );    $url_info = array();    $langs = $xpath->query( '//html' );    foreach ($langs as $lang)    {      $url_info['language'] = $lang->getAttribute('lang');    }    $metas = $xpath->query( '//meta' );    foreach ($metas as $meta)    {      if ($meta->getAttribute('name'))      {        $url_info[$meta->getAttribute('name')] = $meta->getAttribute('content');      }    }    return $url_info;  }  /**   *   * Alexa rank   * @param string $url   * @return integer   */  public static function alexa_rank($url)  {    $domain   = self::domain_name($url);    $request   = "http://data.alexa.com/data?cli=10&dat=s&url=" . $domain;    $data     = self::get_html($request);    preg_match('//si', $data, $p);    return ($l[2]) ? $l[2] : NULL;  }  /**   *   * Alexa inbounds link   * @param string $url   * @return integer   */  public static function alexa_links($url)  {    $domain   = self::domain_name($url);    $request   = "http://data.alexa.com/data?cli=10&dat=s&url=" . $domain;    $data     = self::get_html($request);    preg_match('/<linkSIN NUM="([\d]+)"\/>/si', $data, $l);    return ($l[1]) ? $l[1] : NULL;  }  /**   * Returns total amount of results for any Google search,   * requesting the deprecated Websearch API.   *   * @param    string    $query   String, containing the search query.   * @return    integer          Returns a total count.   */  public static function google_pages($url)  {    //$query = self::domain_name($url);    $url = 'http://ajax.googleapis.com/ajax/services/search/web?v=1.0&rsz=1&q='.$url;    $str = self::get_html($url);    $data = json_decode($str);    return (!isset($data->responseData->cursor->estimatedResultCount))        ? '0'        : intval($data->responseData->cursor->estimatedResultCount);  }  /**   *   * gets the inbounds links from a site   * @param string $url   * @param integer   */  public static function google_links($url)  {    $request   = "http://www.google.com/search?q=" . urlencode("link:" . $url) . "&hl=en";    $data     = self::get_html($request);    preg_match('/<div id="resultStats">(About )?([\d,]+) result/si', $data, $l);    return ($l[2]) ? $l[2] : NULL;  }  /**   *   * web of trust rating   * @param string $url   * @reutn integer   */  public static function WOT_rating($url)  {    $domain = self::domain_name($url);    $request = "http://api.mywot.com/0.4/public_query2?target=" . $domain;    $data   = self::get_html($request);    preg_match_all('//si', $data, $regs);    $trustworthiness = ($regs[2][0]) ? $regs[2][0] : NULL;    return (is_numeric($trustworthiness))? $trustworthiness:NULL;  }     /**   *   * how old is the domain?   * @param string $domain   * @return integer unixtime   */  public static function domain_age($domain)  {    $request = "http://reports.internic.net/cgi/whois?whois_nic=" . $domain . "&type=domain";    $data   = self::get_html($request);    preg_match('/Creation Date: ([a-z0-9-]+)/si', $data, $p);    return (!$p[1])?FALSE:strtotime($p[1]);  }  /**   *   * counts how many tweets about the url   * @param string $url   * @return integer   */  public static function tweet_count($url)  {    $url = urlencode($url);    $twitterEndpoint = "http://urls.api.twitter.com/1/urls/count.json?url=%s";    $fileData = file_get_contents(sprintf($twitterEndpoint, $url));    $json = json_decode($fileData, true);    unset($fileData);        // free memory    return (is_numeric($json['count']))? $json['count']:NULL;  }  /**   * Returns the total amount of Facebook Shares for a single page   *   * @link     https://graph.facebook.com/   * @param     string   The URL to check.   * @return    integer  Returns the total amount of Facebook   */  public static function facebook_shares($q)  {    //Execution and result of Json    $str = self::get_html('http://graph.facebook.com/?id='.urlencode($q));    $data = json_decode($str);    //Return only number of facebook shares    $r = $data->shares;    return ($r != NULL) ? $r : intval('0');  }  /**   *   * get the pagespeed rank over 100   * @param string $url   * @return integer   */  public static function page_speed($url)  {    $url = 'https://developers.google.com/_apps/pagespeed/run_pagespeed?url='.$url.'&format=json';    $str = self::get_html($url);    $data = json_decode($str);    return intval($data->results->score);  }  /**   *   * get google page rank   * @param string $url   * @return integer   */  public static function page_rank($url)  {     $query = "http://toolbarqueries.google.com/tbr?client=navclient-auto&ch=".self::CheckHash(self::HashURL($url)). "&features=Rank&q=info:".$url."&num=100&filter=0";      $data = self::get_html($query);//die(print_r($data));    $pos  = strpos($data, "Rank_");    if($pos === false)    {      return NULL;    }    else    {      $pagerank = substr($data, $pos + 9);      return $pagerank;    }  }  // functions for google pagerank  /**   * To calculate PR functions   */  public static function StrToNum($Str, $Check, $Magic)  {    $Int32Unit = 4294967296; // 2^32    $length = strlen($Str);    for ($i = 0; $i = $Int32Unit) {        $Check = ($Check - $Int32Unit * (int) ($Check / $Int32Unit));        //if the check less than -2^31        $Check = ($Check >= 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)) <= 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;  }}