noahbuscher/macaw组建的一个疑问，求解答

Question

今天看一个路由包的源码，觉得这步判断有点多余，希望大家可以帮助理解下这块的源码。 项目地址:https://github.com/noahbusche... 这个包很小，下面是主要代码部分，不理解为何有了(in_array($uri, self::$routes))这个if判断，还需要下面的(preg_match('#^' . $route . '$#', $uri, $matched))正则判断，这俩判断从结果上有什么不同么 if (in_array($uri, self::$routes)) { $route_pos = array_keys(self::$routes, $uri); foreach ($route_pos as $route) { // Using an ANY option to match both GET and POST requests if (self::$methods[$route] == $method || self::$methods[$route] == 'ANY' || in_array($method, self::$maps[$route])) { $found_route = true; ... } } } else { // Check if defined with regex $pos = 0; foreach (self::$routes as $route) { if (strpos($route, ':') !== false) { $route = str_replace($searches, $replaces, $route); } if (preg_match('#^' . $route . '$#', $uri, $matched)) { if (self::$methods[$pos] == $method || self::$methods[$pos] == 'ANY' || (!empty(self::$maps[$pos]) && in_array($method, self::$maps[$pos]))) { $found_route = true; ... } } } }