Addcartphp Num High Quality Info

Retrieves product ID and quantity. It must check if the product is already in the cart; if so, it increments the quantity instead of creating a duplicate entry.

// Retrieve and validate the numeric quantity 'num' $num = filter_input(INPUT_POST, 'num', FILTER_VALIDATE_INT); $product_id = filter_input(INPUT_POST, 'product_id', FILTER_VALIDATE_INT); addcartphp num high quality

<!-- Example Product Button --> <div class="product-card"> <h3>Wireless Headphones</h3> <p>Price: $99.00</p> <input type="number" id="qty-101" value="1" min="1"> <button onclick="addToCart(101)">Add to Cart</button> </div> Retrieves product ID and quantity