eyecatchup / SEOstats

     * @return        integer    Returns the Sistrix visibility index.

     * @link    http://www.sistrix.com/blog/870-sistrix-visibilityindex.html

     */

    public static function getVisibilityIndex($url = false)

    {

        $url     = parent::getUrl($url);

        $domain  = Helper\Url::parseHost($url);

        $dataUrl = sprintf(Config\Services::SISTRIX_VI_URL, urlencode($domain));

        $html = static::_getPage($dataUrl);

        @preg_match_all('#<h3>(.*?)<\/h3>#si', $html, $matches);

        return isset($matches[1][0]) ? $matches[1][0] : parent::noDataDefaultValue();

    }

    /**

     * Returns the Sistrix visibility index by using the SISTRIX API

     * @param   url   string     The URL to check.

     * @return        integer    Returns the total count of URL shares.

     */

    public static function getDeliciousShares($url = false)

    {

        $url     = parent::getUrl($url);

        $dataUrl = sprintf(Config\Services::DELICIOUS_INFO_URL, urlencode($url));

        $jsonData = parent::_getPage($dataUrl);

        $phpArray = Helper\Json::decode($jsonData, true);

        return isset($phpArray[0]['total_posts']) ? intval($phpArray[0]['total_posts']) : parent::noDataDefaultValue();

    }

    /**

     * Returns the Top10 tags for $url from Delicious.

     * @param   url   string     The URL to check.

     * @return        integer    Returns the total count of URL shares.

     */

    public static function getVKontakteShares($url = false)

    {

        $url     = parent::getUrl($url);

        $dataUrl = sprintf(Config\Services::VKONTAKTE_INFO_URL, urlencode($url));

        $htmlData = parent::_getPage($dataUrl);

        @preg_match_all('#^VK\.Share\.count\(1, (\d+)\);$#si', $htmlData, $matches);

        return isset($matches[1][0]) ? intval($matches[1][0]) : parent::noDataDefaultValue();

    }

    /**

     * Returns an array of interaction counts (shares, comments, clicks, reach) for host of $url on Xing.