Something

    public static function getCountryArray($native_language = false) {		$countries = array();				function filterCountries($item, $key, $name_type) {			global $countries;						$countries[$item['country_id']] = $item[$name_type];		}				if ($native_language) {			array_walk(self::$result, 'filterCountries', 'name_native');		}		else {			array_walk(self::$result, 'filterCountries', 'name_english');		}				return $countries;    }