0) { $stmt = $link->prepare("SELECT pro_id, pro_name, pro_type, pro_image FROM tbl_product WHERE pro_id = ?"); $stmt->bind_param("i", $productId); $stmt->execute(); $result = $stmt->get_result(); $product = $result->fetch_assoc(); if ($product) { if (!isset($_SESSION['cart'])) { $_SESSION['cart'] = []; } if (isset($_SESSION['cart'][$productId])) { $_SESSION['cart'][$productId]['qty'] += $quantity; } else { $_SESSION['cart'][$productId] = [ 'id' => $product['pro_id'], 'name' => $product['pro_name'], 'price' => $product['pro_type'], // Assuming this is price 'image' => $product['pro_image'], 'qty' => $quantity ]; } } } } // Now display the cart contents below ?>