$productID = 1234; $product = Product::getInstanceByID($productID); echo $product->getName();
$productID = $_GET['product_id']; $product = Product::getInstanceByID($productID); if($product->getStock() > 0) { // process order } else { // show out of stock message }This code retrieves the product instance based on the product ID passed in the URL and checks if the product is in stock before processing the order. The package library for the Product class and its methods may vary depending on the framework or CMS being used. It could be a custom library or part of a larger e-commerce package such as Magento or WooCommerce.