PHP simple shopping cart design _ PHP Tutorial

PHP simple shopping cart design. In this program, two classes are created. one is a common Product class, which encapsulates the attributes of one Product and one Product, and the other is the Cart class of the shopping Cart. Product class (Product. php) the Product creates two classes in this program. one is a common Product class, which encapsulates the attributes of a Product and a Product, and the other is the Cart class of the shopping Cart.

Product class (Product. php)

The product category has three attributes: ID, description, and price.

class Product{protected $_partNumber, $_description, $_price;   public function __construct($parNumber,$description,$price){     $this->_partNumber=$parNumber;     $this->_description=$description;   $this->_price=$price;   }      public function getPartNumber()    {   return $this->_partNumber;   }      public function getDescription()    {   return $this->_description;   }      public function getPrice()    {   return $this->_price;   }}

Cart object (Cart. php)

The main function of the shopping cart class is to calculate the total price of all items.

require_once ('Product.php');class Cart extends ArrayObject{protected $_products;public function __construct()    {$this->_products=array();parent::__construct($this->_products);}public function getCarTotal()    {for(  $i=$sum=0,$cnt=count($this);  $i<$cnt;  $sum+=$this[$i++]->getPrice());return $sum;}}

Call method:

$cart=new Cart();$cart[]=new Product('00231-A','Description',1.99);$cart[]=new Product('00231-B','B',1.99);echo $cart->getCarTotal();

A shopping cart object is an array. each array element contains a commodity object. This allows you to conveniently calculate the sum of elements in the array.

Bytes. Product (Product. php) products...