PHP 函数与面向对象编程的结合

class MyClass {    public $property1;    public $property2;    public function __construct($property1, $property2) {        $this->property1 = $property1;        $this->property2 = $property2;    }}// 创建对象$myObject = new MyClass("value1", "value2");

// 访问属性echo $myObject->property1; // value1// 调用方法$myObject->myMethod();

function getPropertyValue(MyClass $object) {    return $object->property1;}// 获取对象的 property1$value = getPropertyValue($myObject);

class Product {    private $name;    private $price;    public function __construct($name, $price) {        $this->name = $name;        $this->price = $price;    }    public function getName() {        return $this->name;    }    public function getPrice() {        return $this->price;    }}class Cart {    private $products = [];    public function addProduct(Product $product) {        $this->products[] = $product;    }    public function getTotalPrice() {        $total = 0;        foreach ($this->products as $product) {            $total += $product->getPrice();        }        return $total;    }}// 创建产品$product1 = new Product("Product 1", 10);$product2 = new Product("Product 2", 15);// 创建购物车$cart = new Cart();// 添加产品到购物车$cart->addProduct($product1);$cart->addProduct($product2);// 获取购物车总价$totalPrice = $cart->getTotalPrice();