What are the advantages of using a class-based approach for implementing shopping cart functionality in PHP?

Using a class-based approach for implementing shopping cart functionality in PHP allows for better organization, reusability, and maintainability of code. It also provides a clear structure for managing cart items, calculating totals, and applying discounts or promotions. 

class ShoppingCart {
    private $items = [];

    public function addItem($product, $quantity) {
        if(isset($this->items[$product])) {
            $this->items[$product] += $quantity;
        } else {
            $this->items[$product] = $quantity;
        }
    }

    public function removeItem($product) {
        unset($this->items[$product]);
    }

    public function getTotal() {
        $total = 0;
        foreach($this->items as $product => $quantity) {
            // Calculate total based on product price and quantity
        }
        return $total;
    }
}

Keywords

class-based approach shopping cart functionality PHP advantages implementation

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