class UserModel { private $db; function __construct($db) { $this->db = $db; } function createUser($username, $password) { // Insert new user into database } function getUser($id) { // Get user details from database } function updateUser($id, $newUserData) { // Update user details in database } function deleteUser($id) { // Delete user from database } }
class ProductModel { private $db; function __construct($db) { $this->db = $db; } function addProduct($name, $description, $price) { // Add new product to database } function getProduct($id) { // Get product details from database } function updateProduct($id, $newProductData) { // Update product details in database } function deleteProduct($id) { // Delete product from database } }These examples are part of a package or library that can be used to implement the model layer in PHP applications. Examples of PHP packages or libraries that provide a model layer include Laravel's Eloquent ORM (Object-Relational Mapping), Doctrine ORM, and Propel ORM.