class User { private $email; public function __construct($email) { $this->email = $email; } public static function whereEmail($email) { // Look up the user in the database by email address // Return a new User object with the user's data } } $user = User::whereEmail('john@example.com');In this example, the whereEmail method takes an email address as an argument and returns a new User object with the data for the user whose email matches the argument. The specific package library used for the User class may depend on the framework or CMS being used for the web application. For example, Laravel uses the Illuminate\Auth package for user authentication and management, while WordPress uses its own WP_User class.