// Generate a unique reference number for the order $orderReference = getUniqReference(); // Save the order information to the database saveOrderToDatabase($orderReference, $orderDetails);
// Display the order reference number to the user echo "Thank you for your order! Your reference number is: " . getUniqReference();In this example, we are generating a unique reference number and displaying it to the user after they have placed an order. The getUniqReference function is commonly used in e-commerce and payment processing libraries in PHP. It is often included as part of a larger package or library, such as the Stripe PHP library or the PayPal PHP SDK.