require_once 'vendor/autoload.php'; use Auth\AuthLoginUsingId; $auth = new AuthLoginUsingId(); $user_id = $_POST['user_id']; $password = $_POST['password']; if ($auth->login($user_id, $password)) { // Successful login, redirect to home page header('Location: /home.php'); exit(); } else { // Failed login, show error message echo 'Invalid username or password'; }In this example, we first include the library using the `require_once` statement. Then we create a new instance of `AuthLoginUsingId` class. Next, we get the user ID and password from the login form via POST request. We pass these values to the `login` method of the `AuthLoginUsingId` class which returns a boolean value representing the success or failure of the login attempt. If the login attempt is successful, we redirect the user to the home page. Otherwise, we display an error message to the user. Overall, PHP Auth LoginUsingId is a great library for anyone who wants to quickly implement user authentication and authorization functionality in their PHP applications.