public static function getGlobalRank($url = false)
    {
        /*
        self::setRankingKeys($url);
        if (0 == self::$_rankKeys['3m']) {
            return parent::noDataDefaultValue();
        }
        */

        $xpath = self::_getXPath($url);

        $xpathQueryList = array(
            "//*[@id='traffic-rank-content']/div/span[2]/div[1]/span/span/div/strong",
            "//*[@id='traffic-rank-content']/div/span[2]/div[1]/span/span/div/strong/a"
        );

        return static::parseDomByXpathsToIntegerWithoutTags($xpath, $xpathQueryList);
    }