ShoppingCart PHP Class

ShoppingCart is a simple PHP package that provides you with a simple shopping cart implementation stored in session.

Installation

Composer

You can install it using composer:

composer require lombervid/shoppingcart

Usage

Create an instance of ShoppingCart class.

use Lombervid\ShoppingCart\ShoppingCart;

$shoppingCart = new ShoppingCart();

Add items

You can add items calling the method add() passing an Item instance as parameter.

use Lombervid\ShoppingCart\Item;
use Lombervid\ShoppingCart\ShoppingCart;

$cart = new ShoppingCart();
$cart->add(new Item('1', 'Cake', 15.56));
$cart->add(new Item('15', 'Frappe', 5));

foreach ($cart->items() as $item) {
	// $item->id
	// $item->name
}

at this point your $cart->items() will look like this:

array:2 [▼
  1 => Lombervid\ShoppingCart\Item {#5 ▼
    -id: "1"
    -name: "Cake"
    -price: 15.56
  }
  15 => Lombervid\ShoppingCart\Item {#6 ▼
    -id: "15"
    -name: "Frappe"
    -price: 5.0
  }
]

Add extra fields to your item

You can also add extra fields (such as price, name, etc) to your item. The Item constructor receives a parameter fields which is an Array with the following structure:

[
    'field_name'   => 'field_value',
    'field_2_name' => 'field_2_value'
]

when you provide the $fields param, each field of the array is added to your item.

$fields = [
	'size'  => 'XL',
	'color' => 'blue'
];

$item = new Item('23', 'My Shirt', 2.5, fields: $fields);
$cart->add($item);

with the above code your $cart->items() will look line:

array:1 [▼
  23 => Lombervid\ShoppingCart\Item {#5 ▼
    -id: "23"
    -name: "My Shirt"
    -price: 2.5
    -qty: 1
    -fields: array:2 [▼
      "size" => "XL"
      "color" => "blue"
    ]
  }
]

Then you can access any extra field as if they were properties:

foreach ($cart->items() as $item) {
    // $item->size
    // $item->color
}

Remove items

You can remove an item from the cart calling the method remove($id) which receive item's $id as parameter.

$cart->remove(23);

Clear the cart

You can clear the cart calling the method clear() which removes all the items from the cart.

$shoppingCart->clear();

Advanced options

ShoppingCart

Cart options

It is an array of options. The default value is:

[
    'name'     => 'shopping_cart',
    'autosave' => true,
    'tax'      => 0,
    'shipping' => [
        'amount' => 0,
        'free'   => 0,
    ],
]

Option	Type	Default	Description
name	string	shopping_cart	Cart's name. Used to save the cart in storage
autosave	bool	true	If set to true, cart is saved when object is destroyed
tax	int|float	0	Porcentaje to be used as tax (0 - 100)
shipping.amount	int|float	0	Shipping cost
shipping.free	int|float	0	Value after which shipping will be free. 0 to disable

Constructor

Parameter	Type	Default	Required	Description
$options	array	See Cart options	false	Cart options
$storage	StorageInterface	NativeSessionStorage	false	Storage driver

Methods

Name	Description
add(Item $item, bool $append = true): void	Add an item to the cart
remove(string $id): bool	Remove an item from the cart
subtotal(): float	Get subtotal
shipping(): float	Get shipping cost
tax(): float	Get tax
total(): float	Get total
inCart(string $id): bool	Check if an item is in the cart
items(): array	Return the items in the cart
clear(): static	Remove all items from the cart
isEmpty(): bool	Check if the cart is empty
totalItems(): int	Return the total (distinct) items in the cart
save(): void	Save items in the storage
toArray(): array	Return items as array

Item

Constructor

Parameter	Type	Default	Required	Description
$id	string	N/A	true	Identifier
$name	string	N/A	true	Name / description
$price	float	N/A	true	Price (>= 0)
$qty	int	1	false	Quantity (> 0)
$fields	array	[]	false	Extra fields
$discount	float	0	false	Discount (>= 0)

Methods

Name	Description
add(int $qty): void	Increase item's quantity by $qty
update(int $qty): void	Update item's quantity to $qty
get(string $name, mixed $default = null): mixed	Get $name property/field
hasDiscount(): bool	Check if has a discount
price(): float	Get item's price
total(): float	Get total
toArray(): array	Return item as array

Contributing

Refer to CONTRIBUTING for information.

License

MIT