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<?php
namespace MrPrompt\ShoppingCart;
use MrPrompt\ShoppingCart\Contracts\CartInterface;
use MrPrompt\ShoppingCart\Contracts\ItemInterface;
use SplObjectStorage;
class Cart extends SplObjectStorage implements CartInterface
{
private $id;
public function __construct(string $id, array $items = [])
$this->id = $id;
array_walk($items, [ $this, 'attach']);
}
public function getId(): string
return $this->id;
public function addItem(ItemInterface $item): bool
if ($this->contains($item)) {
return false;
$this->attach($item);
return true;
public function removeItem(ItemInterface $item): bool
$this->detach($item);
public function cleanUp(): bool
$this->removeAll($this);
return $this->isEmpty();
public function isEmpty(): bool
return $this->count() === 0;
mrprompt /
ShoppingCart
