if ($_SERVER['REQUEST_METHOD'] == 'GET') { $name = $_GET['name']; $age = $_GET['age']; echo "Hello $name, you are $age years old!"; }In this example, the `getParameter` method is called on the `$_GET` superglobal array to retrieve the values of the `name` and `age` parameters from the URL. These values are then used to display a personalized message to the user. The `getParameter` method is a built-in function in PHP and does not require any external package or library.