What is the role of a router in object-oriented PHP programming for internal linking on a website?

In object-oriented PHP programming, a router is used to handle internal linking on a website by mapping URLs to specific controller methods. This allows for cleaner and more organized code structure, as well as easier maintenance and scalability of the website. 

class Router {
    private $routes = [];

    public function addRoute($url, $controller) {
        $this->routes[$url] = $controller;
    }

    public function route($url) {
        if(array_key_exists($url, $this->routes)) {
            $controller = new $this->routes[$url]();
            $controller->handleRequest();
        } else {
            // Handle 404 error
            echo "404 Page Not Found";
        }
    }
}

// Example of adding routes
$router = new Router();
$router->addRoute('/', 'HomeController');
$router->addRoute('/about', 'AboutController');

// Example of routing a URL
$router->route('/about');

Keywords

router object-oriented programming internal linking website PHP

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