joseph-montanez/phpcartload

Standalone shopping cart

PHPCartLoad

, _(*1)

Inspired by Satchless for Python, PHPCartLoad is a feature rich library intended to help build shopping carts and general e-commerce applications. This library is to provide a foundation of easy to use classes to manage inventory pricing and carts. There is zero database requirements and is completely data driven., _(*2)

License

The library is MIT, do what you want with it., _(*3)

To Do

This is still alpha and undergoing changes for a better API. The following is to come:, _(*4)

• Reach 100% code coverage
• Create tests for weight
• Finish Cart API
  • Additional events for find, delete
  • Provide default duplicate logic
  • Taxes or just any price breakdown per item
  • Discounts, coupons via Pricing Rules (Mangento does a good job here)
• Consider multi-currency, multi-lingual support
• Stock API
  • In Stock
  • Drop-Shipped
  • Back Ordered (Including support for limiting to the amount back ordered)
• Shipping API
  • Initial Support For USPS
  • Guidelines for more shipping providers
  • Math stuff for calculating box sizes based on product dimensions and weight
• Order API
• Invoice API

Examples

Here are some examples of what is current available in the library., _(*5)

• Simple Pricing
• Bulk Pricing
• SKU Variations
• Combinations
• Cart Events

Simple Pricing

This is the Hello World of this library, showing you how little you have to do to start to get the library working with your existing code base., _(*6)

<?php
require_once __DIR__ . '/../vendor/autoload.php';

use CartLoad\Product\Product;


$apple = Product::make([
    'name' => 'Apple',
    'sku' => 'a',
    'price' => 19.95
]);

$qty = 10;


//-- This will return the simple price: 19.95
var_dump($apple->getPrice($qty));

Bulk Pricing

You can also expand on pricing to include bulk pricing, again keeping with something as simple as possible., _(*7)

<?php
require_once __DIR__ . '/../vendor/autoload.php';

use CartLoad\Product\Product;

$apple = new Product([
    'name' => 'Apple',
    'sku' => 'a',
    'price' => [
        ['min_qty' => 1, 'max_qty' => 9, 'price' => 19.95],
        ['min_qty' => 10, 'price' => 14.95],
    ]
]);

$qty = 10;

//-- This will return the simple price: 14.95
var_dump($apple->getPrice($qty));

SKU Variations

SKU Variations, or options are ways to let a base product serve as a platform for all the variations. So if you have a shirt with several sizes and colors, then you can have custom pricing for each of those variants / options., _(*8)

<?php
require_once __DIR__ . '/../vendor/autoload.php';

use CartLoad\Product\Product;
use CartLoad\Cart\Item;

$shirt = Product::make([
    'id' => 1,
    'name' => 'Shirt',
    'sku' => 'shirt',
    'price' => [
        ['min_qty' => 1, 'max_qty' => 9, 'price' => 4.95],
        ['min_qty' => 10, 'max_qty' => 19, 'price' => 3.95],
    ],
    'variations' => [
        [
            'id' => 1,
            'name' => 'Color',
            'required' => true,
            'items' => [
                ['id' => 1, 'name' => 'Red', 'price' => 0.5, 'sku' => 'r'],
                ['id' => 2, 'name' => 'Blue', 'price' => 0.4, 'sku' => 'b'],
                ['id' => 3, 'name' => 'Green', 'price' => 0.6, 'sku' => 'g'],
            ]
        ],
        [
            'id' => 2,
            'name' => 'Size',
            'required' => true,
            'items' => [
                ['id' => 4, 'name' => 'Small', 'price' => 1.0, 'sku' => 's'],
                ['id' => 5, 'name' => 'Medium', 'price' => 1.1, 'sku' => 'm'],
                ['id' => 6, 'name' => 'Large', 'price' => 1.2, 'sku' => 'l'],
            ]
        ],
    ]
]);

//-- Blue Medium Shirt
$cartItem = Item::make([
    'id'         => 1,
    'product_id' => 1, //Shirt product ID
    'qty'        => 1,
    'variations' => [2, 5] // Blue, Medium
]);

//-- The unit price of a blue medium shirt is 6.45
$unit_price = $cartItem->getPrice($shirt);
//-- The resulting SKU is then "shirt-b-m"
$unit_sku = $cartItem->getSku($shirt);

Combinations

Combinations are ways to customize the resulting product variants. This could be as simple as saying a certain product configuration is not available, or maybe you need a special price, SKU or weight for a specific combination. Another possibility if you need to track stock for the variations, instead these can be linked to individual products for greater customizations., _(*9)

<?php

require_once __DIR__ . '/../vendor/autoload.php';

use CartLoad\Product\Product;
use CartLoad\Cart\Item;

$shirt = Product::make([
    'id' => 1,
    'name' => 'Shirt',
    'sku' => 'shirt',
    'price' => [
        ['min_qty' => 1, 'max_qty' => 9, 'price' => 4.95],
        ['min_qty' => 10, 'max_qty' => 19, 'price' => 3.95],
    ],
    'variations' => [
        [
            'id' => 1,
            'name' => 'Color',
            'required' => true,
            'items' => [
                ['id' => 1, 'name' => 'Red', 'price' => 0.5, 'sku' => 'r'],
                ['id' => 2, 'name' => 'Blue', 'price' => 0.4, 'sku' => 'b'],
                ['id' => 3, 'name' => 'Green', 'price' => 0.6, 'sku' => 'g'],
            ]
        ],
        [
            'id' => 2,
            'name' => 'Size',
            'required' => true,
            'items' => [
                ['id' => 4, 'name' => 'Small', 'price' => 1.0, 'sku' => 's'],
                ['id' => 5, 'name' => 'Medium', 'price' => 1.1, 'sku' => 'm'],
                ['id' => 6, 'name' => 'Large', 'price' => 1.2, 'sku' => 'l'],
            ]
        ],
    ],
    'combinations' => [
        //-- Blue Medium Shirt on Sale with special SKU to track all blue shirt sales in main system
        [
            'id' => 1,
            'variations' => [2, 5],
            'price' => 5.00,
            'sku' => 'shirt-b-m-sale',
        ]
    ]
]);

//-- Blue Medium Shirt
$cartItem = Item::make([
    'id'         => 1,
    'product_id' => 1, //Shirt product ID
    'qty'        => 1,
    'variations' => [2, 5] // Blue, Medium
]);

//-- The unit price of a blue medium shirt is 5.00
$unit_price = $shirt->getCartPrice($cartItem);
//-- The resulting SKU is then "shirt-b-m-sale"
$unit_sku = $shirt->getCartSku($cartItem);

echo $unit_sku, ' - ', $unit_price;

Cart Events

A generic cart system is provided with a PHP Session ($_SESSION) driver. Its possible to interject events to provide basic features like validation., _(*10)

<?php

use CartLoad\Cart\Container;
use CartLoad\Cart\Events\CartAddItemBeforeEvent;
use CartLoad\Cart\Events\CartGetItemAfterEvent;
use CartLoad\Cart\Item;
use CartLoad\Cart\Repositories\Session;
use CartLoad\Product\Product;

require_once __DIR__ . '/../vendor/autoload.php';

//--------------------------------------------------------------------------------------------------------------
//-- Products
//--------------------------------------------------------------------------------------------------------------
$products = [
    'd97c4f2f-fd06-4e7d-b161-51f4038ee898' => Product::make([
        'id' => 'd97c4f2f-fd06-4e7d-b161-51f4038ee898',
        'name' => 'Apple',
        'sku' => 'a',
        'price' => 19.95
    ]),
    'b99cb34e-7edb-45d3-9dfe-5e39f6b71587' => Product::make([
        'id' => 'b99cb34e-7edb-45d3-9dfe-5e39f6b71587',
        'name' => 'Orange',
        'sku' => 'o',
        'price' => 21.99
    ]),
];


//--------------------------------------------------------------------------------------------------------------
//-- Cart
//--------------------------------------------------------------------------------------------------------------
$repository = new Session();
$container = new Container($repository);

//--------------------------------------------------------------------------------------------------------------
//-- Validation
//--------------------------------------------------------------------------------------------------------------
//-- @ before adding to cart
$container->addListener(CartAddItemBeforeEvent::NAME, function (CartAddItemBeforeEvent $event) use ($products) {
    /**
     * @var $item CartLoad\Cart\Item
     */
    $item = $event->getItem();

    /** @var CartLoad\Product\Product $product */
    $product = isset($products[$item->getProductId()]) ? $products[$item->getProductId()] : null;

    if ($product === null) {
        $event->addError('Sorry this product "' . $item->getProductId() . '" does not exist', 'does-not-exist');
    }
});

//-- @ after getting an item
$container->addListener(CartGetItemAfterEvent::NAME, function (CartGetItemAfterEvent $event) {
    /**
     * @var $item CartLoad\Cart\Item
     */
    $item = $event->getItem();

    if ($item->getQty() < 1) {
        $event->addError('Please enter a quantity', 'qty');
    }
});

//-- Example of a good cart add
$apple = $products['d97c4f2f-fd06-4e7d-b161-51f4038ee898'];
$cartAppleData = [
    'id'         => uniqid(),
    'product_id' => $apple->getId(),
    'qty'        => 3,
];
$cartAppleItem = Item::make($cartAppleData);
$appleAdded = $container->addItem($cartAppleItem); //-- returns true

//-- Example of a bad cart add
$cartBadAppleData = [
    'id'         => uniqid(),
    'product_id' => 'i do not exist',
    'qty'        => 3,
];
$cartBadAppleItem = Item::make($cartBadAppleData);
$badAppleAdded = $container->addItem($cartBadAppleItem); //-- returns false

if (!$badAppleAdded) {
    $errors = $container->getErrors();
    // array(1) {
    //    ["does-not-exist"]=> string(33) "Sorry this product "i do not exist" does not exist"
    // }

    foreach ($errors as $key => $error) {
        echo '"', $key, '" - ', $error, PHP_EOL;
    }
}

How To Build The Documentation

You will need python install on your computer., _(*11)

cd docs
pip install -r requirements.txt
make