src/Router.php
private static function checkRoutes()
    {
        $method = $_SERVER['REQUEST_METHOD'];

        $route_pos = array_keys(self::$routes, self::$uri, true);

        foreach ($route_pos as $route) {
            $methodRoute = self::$methods[$route];

            if ($methodRoute == $method || $methodRoute == 'ANY') {
                if (! is_object($callback = self::$callbacks[$route])) {
                    self::$response = self::invokeObject($callback);
                } else {
                    self::$response = call_user_func($callback);
                }

                if (! self::$halts) {
                    return self::$response;
                }

                self::$halts--;
            }
        }

        return self::$response;
    }
private static function checkRoutes()
    {
        $method = $_SERVER['REQUEST_METHOD'];

        $route_pos = array_keys(self::$routes, self::$uri, true);

        foreach ($route_pos as $route) {
            $methodRoute = self::$methods[$route];

            if ($methodRoute == $method || $methodRoute == 'ANY') {
                if (! is_object($callback = self::$callbacks[$route])) {
                    self::$response = self::invokeObject($callback);
                } else {
                    self::$response = call_user_func($callback);
                }

                if (! self::$halts) {
                    return self::$response;
                }

                self::$halts--;
            }
        }

        return self::$response;
    }
Check if route is defined without regex.

@return callable|false