public function getCountryCode($country_name)
    {
        foreach (self::$supported_languages as $lng) {
            if (empty(self::$countries[$lng])) {
                continue;
            }
            
            foreach (self::$countries[$lng] as $code => $translation) {
                if (strcasecmp($country_name, $translation) == 0) {
                    return $code;
                }
            } // foreach
        } // foreach
        
        return "";
    }