Php provides professional instances for obtaining website SEO information

This article mainly introduces how php can obtain SEO information for websites. The example analyzes the seoreport skills for checking and obtaining SEO information for websites, which is of great practical value, for more information, see the example in this article. Share it with you for your reference. The details are as follows:

The seo features include:
-Check the response of the specified website.
-Retrieve the language and other meta tag data of the website homepage
-Get the import link of the website, ranking from Alexa's traffic
-Get the import link of the website, the number of webpages indexed by Google
-Obtain the website's trust, ranking by WOT.
-Get because it is the first registered website domain name age
-Number of Twitter website pages retrieved
-Website page of the obtained Facebook link
-Get the speed grade of a website's Google webpage
-Obtain the Google page ranking of a website

<?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 = 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('/
  /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('/
  
(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 < $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 $Check;  }  /**   * Genearate a hash for a url   */  public static function HashURL($String)  {    $Check1 = self::StrToNum($String, 0x1505, 0x21);    $Check2 = self::StrToNum($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 | $T2);  }  /**   * genearate a checksum for the hash string   */  public static function CheckHash($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;  }}
 

Example

<?phpinclude 'seoreport.php';ini_set('max_execution_time', 180);  $url = (isset($_GET['url']))?$_GET['url']:'http://phpclasses.org';  $meta_tags = seoreport::meta_info($url);  //die(var_dump($meta_tags));  //first check if site online  if ($meta_tags!==FALSE)  {    $stats = array();    $stats['meta'] = $meta_tags;    $stats['alexa']['rank'] = seoreport::alexa_rank($url);    $stats['alexa']['links'] = seoreport::alexa_links($url);    $stats['domain']['WOT_rating'] = seoreport::WOT_rating($url);      $stats['domain']['domain_age'] = seoreport::domain_age($url);      $stats['social']['twitter'] = seoreport::tweet_count($url);      $stats['social']['facebook'] = seoreport::facebook_shares($url);    $stats['google']['page_rank'] = seoreport::page_rank($url);    $stats['google']['page_speed'] = seoreport::page_speed($url);    $stats['google']['pages'] = seoreport::google_pages($url);    $stats['google']['links'] = seoreport::google_links($url);    var_dump($stats);  }  else 'Site not online. '.$url;

I hope this article will help you with php programming.