protected function _parseFiles() {
		if (isset($_FILES) && $_FILES) {
			$result = array();

			$normalize = function($key, $value) use ($result, &$normalize){
				foreach ($value as $param => $content) {
					foreach ($content as $num => $val) {
						if (is_numeric($num)) {
							$result[$key][$num][$param] = $val;
							continue;
						}
						if (is_array($val)) {
							foreach ($val as $next => $one) {
								$result[$key][$num][$next][$param] = $one;
							}
							continue;
						}
						$result[$key][$num][$param] = $val;
					}
				}
				return $result;
			};
			foreach ($_FILES as $key => $value) {
				if (isset($value['name'])) {
					if (is_string($value['name'])) {
						$result[$key] = $value;
						continue;
					}
					if (is_array($value['name'])) {
						$result += $normalize($key, $value);
					}
				}
			}
			return $result;
		}
		return array();
	}