README

A reusable shopping cart implementation.

Install

composer require mrprompt/shopping-cart

Using

Initializing a cart with items

You can initializes a cart passing an array of items. An item is a instance of Item class or an implementation of ItemInterface.

use \MrPrompt\ShoppingCart\Cart;
use \MrPrompt\ShoppingCart\Item;

$items = [ 
    new Item(uniqid()),
    new Item(uniqid(), 1.00),
    new Item(uniqid(), 5.00, 10),
];

$cartId = uniqid();

$cart = new Cart($cartId, $items);

Add items to cart

You can add items to an existent cart passing an instance of Item.

use \MrPrompt\ShoppingCart\Item;

$itemId = uniqid();
$itemPrice = 1.99;
$itemQuantity = 30;

$item = new Item($itemId, $itemPrice, $itemQuantity);

$cartId = uniqid();

$cart = new Cart($cartId);
$cart->addItem($item);

Remove an item from cart

Pass an instance of Item - previously added to cart obvously - to remove it.

use \MrPrompt\ShoppingCart\Item;

$itemId = uniqid();
$itemPrice = 1.99;
$itemQuantity = 30;

$item = new Item($itemId, $itemPrice, $itemQuantity);

$cartId = uniqid();
$cart = new Cart([ $item ]);
$cart->removeItem($item);

Cleanup the cart

To remove all items from cart, you can use the cleanUp method:

use \MrPrompt\ShoppingCart\Cart;
use \MrPrompt\ShoppingCart\Item;

$itemId = uniqid();
$itemPrice = 1.99;
$itemQuantity = 30;
$item = new Item($itemId, $itemPrice, $itemQuantity);

$cartId = uniqid();
$cart = new Cart($cartId, [ $item ]);
echo $cart->count(); // === 1

$cart->cleanUp();

echo $cart->count(); // === 0

Check if cart is empty

To check if the cart is empty, you can use isEmpty method:

use \MrPrompt\ShoppingCart\Cart;
use \MrPrompt\ShoppingCart\Item;

$itemId = uniqid();
$itemPrice = 1.99;
$itemQuantity = 30;
$item = new Item($itemId, $itemPrice, $itemQuantity);

$cartId = uniqid();

$cart = new Cart($cartId, [ $item ]);
echo $cart->isEmpty(); // === false

$cart->cleanUp();

echo $cart->isEmpty(); // === true

Testing

phpunit --coverage-text --testdox

MIT License