require_once('path/to/Controller.php'); $controllerName = new Controller();This example code loads the Controller.php file and creates a new instance of the Controller class, which can then be manipulated as needed. Another popular approach is to use a factory pattern, which can create and return new controller instances based on dynamic settings. In terms of package libraries, there are many available for PHP that can assist with controller loading and related tasks. Some popular PHP framework libraries include Laravel, Symfony, and CodeIgniter, which all provide extensive support for MVC development, routing, and other web application tasks. There are also standalone libraries focused specifically on controller loading and management, such as ControllerResolver from the Symfony HttpKernel component, or the ControllerResolver class from the Silex micro-framework. The specific library or tools used for PHP controller loading will often depend on the size and complexity of the project, as well as the individual developer's personal preferences and coding style. Regardless of which approach is taken, proper controller loading and management is essential for efficient and reliable PHP web development.