public static function getDailyRank($url = false)
    {
        self::setRankingKeys($url);
        if (0 == self::$_rankKeys['1d']) {
            return parent::noDataDefaultValue();
        }

        $xpath = self::_getXPath($url);
        $nodes = @$xpath->query("//*[@id='rank']/table/tr[" . self::$_rankKeys['1d'] . "]/td[1]");

        return !$nodes->item(0) ? parent::noDataDefaultValue() :
            self::retInt( strip_tags($nodes->item(0)->nodeValue) );
    }