//Instantiate controller by name $controllerName = 'HomeController'; $controller = new $controllerName(); //Call the method of the controller $methodName = 'index'; $result = $controller->$methodName(); //Output the result echo $result;This code first creates a new instance of the controller by name 'HomeController'. It then calls the 'index' method of the controller and assigns the result to the variable '$result'. Finally, it outputs the result. The package library for this method is likely the Symfony HttpKernel library. It provides a base controller class and a controller resolver that can dynamically call and execute controllers by name.