Addcartphp Num High Quality -

$_SESSION['cart'][$product_id]['quantity'] = $new_quantity; else // Add new product with validated num $_SESSION['cart'][$product_id] = [ 'name' => $product['name'], 'price' => $product['price'], 'quantity' => $num ];

// Check if requested quantity exceeds available stock if ($num > $product['stock_quantity']) die(json_encode([ 'error' => 'Insufficient stock', 'available' => $product['stock_quantity'] ])); addcartphp num high quality

// Initialize cart session array if not exists if (!isset($_SESSION['cart'])) $_SESSION['cart'] = []; $_SESSION['cart'][$product_id]['quantity'] = $new_quantity