PHP get_meta_tags函数代码示例

function retorne_dados_gerais_site($codigo_html_site, $endereco_url_site)
{
    // tipos de retorno --------------------------------------------------------------------
    // title
    // keywords
    // description
    // ----------------------------------------------------------------------------------------------
    // meta tags do site --------------------------------------------------------
    $meta_tags = get_meta_tags($endereco_url_site);
    // meta tags do site
    // --------------------------------------------------------------------------------
    // codigo html de pagina ------------------------------------------------
    $pagina = $codigo_html_site;
    // codigo html de pagina
    // --------------------------------------------------------------------------------
    // incio de titulo ------------------------------------------------------------
    $titulo_inicio = strpos($pagina, '<title>') + 7;
    // incio de titulo
    // --------------------------------------------------------------------------------
    // tamanho de titulo --------------------------------------------------------
    $tamanho_titulo = strpos($pagina, '</title>') - $titulo_inicio;
    // tamanho de titulo
    // --------------------------------------------------------------------------------
    // obtem titulo completo --------------------------------------------------
    $meta_tags['title'] = substr($pagina, $titulo_inicio, $tamanho_titulo);
    // obtem titulo completo
    // --------------------------------------------------------------------------------
    // retorno ----------------------------------------------------------------------
    return $meta_tags;
    // retorno
    // --------------------------------------------------------------------------------
}

function spiderurl($option)
{
    global $database;
    $url = JRequest::getVar('url', '');
    $start = JRequest::getVar('start', 0);
    $error = 0;
    if (substr($url, 0, 7) != "http://") {
        $url = "http://" . $url;
    }
    if (empty($url) || $start) {
        echo "jQuery('#spiderwebsite').html('<img src=\"../components/com_mtree/img/exclamation.png\" style=\"position:relative;top:3px\" /> " . JText::_('Unable to get metatags') . "')";
    } else {
        if (ini_get('allow_url_fopen')) {
            $metatags = get_meta_tags($url) or $error = 1;
        } else {
            $error = 1;
        }
        if (!$error) {
            if (!empty($metatags['keywords'])) {
                echo "document.getElementById('publishingmetakey').value='" . htmlspecialchars($metatags['keywords'], ENT_QUOTES) . "'; \n";
            }
            if (!empty($metatags['description'])) {
                echo "document.getElementById('publishingmetadesc').value='" . htmlspecialchars($metatags['description'], ENT_QUOTES) . "';";
            }
            echo "jQuery('#spiderwebsite').html('<img src=\"../components/com_mtree/img/accept.png\" style=\"position:relative;top:3px\" /> " . JText::_('Spider has been updated') . "')";
        } else {
            echo "jQuery('#spiderwebsite').html('<img src=\"../components/com_mtree/img/exclamation.png\" style=\"position:relative;top:3px\" /> " . JText::_('Unable to get metatags') . "')";
        }
    }
}

 private function themeforest($feeds)
 {
     include './includes/simple_html_dom.php';
     foreach ($feeds as $feed) {
         echo '<pre>';
         print_r($feed);
         echo '</pre>';
         $html = file_get_html($feed['feed_url']);
         foreach ($html->find('.item-list', 0)->children() as $entry) {
             $title = trim($entry->find('h3', 0)->plaintext);
             $url = 'http://themeforest.net' . $entry->find('h3', 0)->find('a', 0)->href . '?ref=theme-hub';
             $website_id = $feed['website_id'];
             $category_id = $feed['category_id'];
             $thumbnail = $entry->find('.item-thumbnail__image', 0)->find('img', 0)->src;
             $tags = get_meta_tags($url);
             $description = htmlentities(trim($tags['description']));
             $price = filter_var($entry->find('.price', 0)->plaintext, FILTER_SANITIZE_NUMBER_INT);
             echo $title;
             echo '<br>' . $url;
             echo '<br>' . $thumbnail;
             echo '<br>' . $description;
             echo '<br>' . $price;
             $theme_id = $this->model->add_theme($title, $website_id, $category_id, $url, $description, $price);
             if (is_numeric($theme_id)) {
                 copy($thumbnail, '/var/www/themehub/assets/img/thumbnails/theme' . $theme_id . '.jpg');
                 echo 'theme added successfully';
             } else {
                 echo 'error';
             }
             echo '<hr>';
         }
     }
 }

/**
* getDateFormat gets the date format stored in the databank
* if unsuccesful, it will get the default from the defaults.ini
* param $link = receives the link created by the db connection routine
* param $DBLink_OK = receives the tag created by the db connection routine
* return = the date format
*/
function getDateFormat()
{
    global $root_path, $db, $dblink_ok;
    $errFormat = 0;
    /* If no link to db, make own link*/
    if (!isset($db) || !$db) {
        include_once $root_path . 'include/inc_db_makelink.php';
    }
    if ($dblink_ok) {
        $sql = "SELECT value AS date_format FROM care_config_global WHERE type='date_format'";
        if ($result = $db->Execute($sql)) {
            if ($result->RecordCount()) {
                $df = $result->FetchRow();
                return $df['date_format'];
            } else {
                $errFormat = 1;
            }
        } else {
            $errFormat = 1;
        }
    } else {
        $errFormat = 1;
    }
    if ($errFormat) {
        $df = get_meta_tags($root_path . 'global_conf/format_date_default.pid');
        if ($df['date_format'] != '') {
            return $df['date_format'];
        } else {
            return 'dd.MM.yyyy';
        }
        // this is the last alternative format (german traditional)
    }
}

 function parsePage()
 {
     $tags = get_meta_tags($this->page);
     $this->description = $tags['page-description'];
     $this->image = $tags['page-image'];
     $this->title = $tags['page-title'];
 }

 public function getMetaData($uri)
 {
     $validator = new \Zend\Validator\Uri(array('allowRelative' => false));
     if ($validator->isValid($uri)) {
         $return = array('title' => $uri, 'description' => '');
         $metaData = array_merge(array(), get_meta_tags($uri));
         if (!key_exists('title', $metaData)) {
             $ch = curl_init();
             curl_setopt($ch, CURLOPT_HEADER, 0);
             curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
             curl_setopt($ch, CURLOPT_URL, $uri);
             curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
             $data = curl_exec($ch);
             curl_close($ch);
             $doc = new \DOMDocument();
             @$doc->loadHTML($data);
             $nodes = $doc->getElementsByTagName('title');
             if (isset($nodes->item(0)->nodeValue)) {
                 $metaData['title'] = $nodes->item(0)->nodeValue;
             }
         }
         return array_merge($return, $metaData);
     } else {
         return false;
     }
 }

/**
* gets the meta data from a website
*/
function fetchMeta($url = '')
{
    if (!$url) {
        return false;
    }
    // check whether we have http at the zero position of the string
    if (strpos($url, 'http://') !== 0 && strpos($url, 'https://') !== 0) {
        $url = 'http://' . $url;
    }
    $fp = @fopen($url, 'r');
    if (!$fp) {
        return false;
    }
    $content = '';
    while (!feof($fp)) {
        $buffer = trim(fgets($fp, 4096));
        $content .= $buffer;
    }
    $start = '<title>';
    $end = '<\\/title>';
    preg_match("/{$start}(.*){$end}/s", $content, $match);
    $title = isset($match) ? $match[1] : '';
    $metatagarray = get_meta_tags($url);
    $keywords = isset($metatagarray["keywords"]) ? $metatagarray["keywords"] : '';
    $description = isset($metatagarray["description"]) ? $metatagarray["description"] : '';
    return array('title' => $title, 'keywords' => $keywords, 'description' => $description);
}

function kda($url, &$total, $use_meta_tags, $use_partial_total)
{
    if (!stristr($url, 'http://')) {
        $url = 'http://' . $url;
    }
    if ($html = @file_get_contents($url)) {
        $html = html_entity_decode(file_get_contents($url));
        //preg_match('/(?<=<title>).*?(?=<\\/title>)/is', $html, $matches);
        //$title = array_shift($matches);
        $meta_tags = $use_meta_tags ? get_meta_tags($url) : '';
        $html = kda_strip_tag_script($html);
        $no_html = strip_tags($html);
        $tag_info = $meta_tags['description'] . " " . $meta_tags['keywords'];
        $text .= $tag_info . " " . $no_html;
        $total = count(explode(' ', $text));
        $text = kda_clean(kda_stopWords($text));
        $words = explode(' ', $text);
        $total = count($words);
        for ($x = 0; $x < $total; $x++) {
            $words[$x] = trim($words[$x]);
            if ($words[$x] != '') {
                $ws[$words[$x]]++;
                if (trim($words[$x + 1]) != '') {
                    $phrase2 = $words[$x] . " " . trim($words[$x + 1]);
                    $ws[$phrase2]++;
                    if (trim($words[$x + 2]) != '') {
                        $phrase3 = $words[$x] . " " . trim($words[$x + 1]) . " " . trim($words[$x + 2]);
                        $ws[$phrase3]++;
                    }
                }
            }
        }
        foreach ($ws as $word => $count) {
            if ($count > 1 and strlen($word) > 2) {
                $phrase_size = count(explode(' ', $word));
                $occurances[$phrase_size] = $occurances[$phrase_size] + $count;
            }
        }
        foreach ($ws as $word => $count) {
            if ($count > 1 and strlen($word) > 2) {
                $phrase_size = count(explode(' ', $word));
                $ttlWords = $use_partial_total ? $occurances[$phrase_size] : $total;
                $density = round($count / $ttlWords * 100, 2);
                $dens[$phrase_size][$word] = $density;
                $dens[$word] = $count;
            }
        }
        arsort($dens[1]);
        if ($dens[2]) {
            arsort($dens[2]);
        }
        if ($dens[3]) {
            arsort($dens[3]);
        }
        return $dens;
    } else {
        return false;
    }
}

 /**
  * Use PHP to check for robots meta tag
  * NOTE this doesn't work locally (dev mode)
  */
 public function getRobotsMetaTag()
 {
     if (!Director::isDev()) {
         $metatags = get_meta_tags(Director::absoluteBaseURL());
         $robots = empty($metatags['robots']) ? false : true;
     }
     return false;
 }

 public static function getMeta($attr = null)
 {
     if ($attr) {
         $meta = get_meta_tags(self::$url);
         return isset($meta[$attr]) ? $meta[$attr] : 'No meta found';
     }
     return get_meta_tags(self::$url);
 }

 /**
  * Function to Check the current View Port Tag on the site
  *
  * @return string
  * @added 2.0
  */
 static function checkViewPortTag($url)
 {
     if ($metaTags = @get_meta_tags($url)) {
         if (isset($metaTags['viewport'])) {
             return $metaTags['viewport'];
         } else {
             return false;
         }
     }
     return false;
 }

function meta($url)
{
    //metaタグ調査
    $tags = get_meta_tags($url);
    mb_language('japanese');
    $keywords = mb_convert_encoding($tags['keywords'], "UTF-8", "auto");
    $viewport = mb_convert_encoding($tags['viewport'], "UTF-8", "auto");
    $description = mb_convert_encoding($tags['description'], "UTF-8", "auto");
    $twitter = mb_convert_encoding($tags['twitter:card'], "UTF-8", "auto");
    $meta = array($keywords, $viewport, $description, $twitter);
    return $meta;
}

function get_meta_description($file)
{
    $tab_metas = get_meta_tags($file);
    if (isset($tab_metas['description'])) {
        if ($tab_metas['description'] != null) {
            return $tab_metas['description'];
        } else {
            return '';
        }
    } else {
        return '';
    }
}

 public function getuserLocation()
 {
     $ip = "";
     //Retrieving user ip
     $client = @$_SERVER['HTTP_CLIENT_IP'];
     $forward = @$_SERVER['HTTP_X_FORWARDED_FOR'];
     $remote = $_SERVER['REMOTE_ADDR'];
     if (filter_var($client, FILTER_VALIDATE_IP)) {
         $ip = $client;
     } elseif (filter_var($forward, FILTER_VALIDATE_IP)) {
         $ip = $forward;
     } else {
         $ip = $remote;
     }
     //$tags = $this->getLocationByIp($ip);
     $tags = get_meta_tags('http://www.geobytes.com/IpLocator.htm?GetLocation&template=php3.txt&IpAddress=' . $ip);
     $location = new Location();
     $city_id = "";
     //getting the values from the tags
     $location->setCountryName($tags['country']);
     $location->setProvinceName($tags['region']);
     $location->setCityName($tags['city']);
     //passing the values to the variables
     $countryname = $location->getCountryName();
     $provincename = $location->getProvinceName();
     $cityname = $location->getCityName();
     //Finding if the countries, and cities already exist
     $country_res = $this->getCountryByName($countryname);
     $province_res = $this->getProvinceByName($provincename);
     $city_res = $this->getCityByName($cityname);
     //If the information is not in the databse, then add it
     if ($country_res->getCountryName() == "" && $province_res->getProvinceName() == "" && $city_res->getCityName() == "") {
         $city_id = $this->addLocation($location);
         echo "All Empty Result";
     } else {
         if ($country_res->getCountryName() != "" && $province_res->getProvinceName() == "" && $city_res->getCityName() == "") {
             $provinceid = addProvince($provincename, $country_res->getCountryId());
             addCity($cityname, $provinceid);
         } else {
             if ($country_res->getCountryName() != "" && $province_res->getProvinceName() != "" && $city_res->getCityName() == "") {
                 $provinceid = addProvince($provincename, $country_res->getCountryId());
                 $city_id = addCity($cityname);
             } else {
                 $cityres = $this->getCityByName($cityname);
                 $city_id = $cityres->getCityId();
             }
         }
     }
     //Return city Id at the end
     return $city_id;
 }

function youtube($videourl)
{
    $ret = array();
    $video = explode("=", $videourl);
    $video = $video[1];
    $video = explode("&", $video);
    $video = $video[0];
    $video = str_replace("?v=", null, $video);
    $ret['code'] = '<object width="320" height="180"><param name="movie" value="http://www.youtube.com/v/' . $video . '&amp;hl=pt_BR&amp;fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/' . $video . '&amp;hl=pt_BR&amp;fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="320" height="180"></embed></object>';
    $meta = get_meta_tags($videourl);
    $ret['title'] = protect($meta['title']);
    $ret['desc'] = protect($meta['description']);
    return $ret;
}