think\Route::registerRules PHP Method

    protected static function registerRules($rules, $type = '*')
    {
        foreach ($rules as $key => $val) {
            if (is_numeric($key)) {
                $key = array_shift($val);
            }
            if (empty($val)) {
                continue;
            }
            if (is_string($key) && 0 === strpos($key, '[')) {
                $key = substr($key, 1, -1);
                self::group($key, $val);
            } elseif (is_array($val)) {
                self::setRule($key, $val[0], $type, $val[1], isset($val[2]) ? $val[2] : []);
            } else {
                self::setRule($key, $val, $type);
            }
        }
    }