Conclusion A parameter named num on add-cart.php most commonly denotes quantity. Implementing safe, user-friendly cart behavior requires strict validation, server-side authoritative checks for product and pricing, CSRF protections, and clear UX for edge cases like stock limits. The concise PHP example demonstrates basic secure handling: sanitize inputs, check DB for product and stock, update session cart, and return a structured response.
A file named add-cart.php typically handles the server-side logic for adding a product to a shopping cart session in custom PHP e-commerce applications. The parameter num (often abbreviated for "number") usually refers to the of the item being added. Role of add-cart.php add-cart.php num
The num parameter (often named qty , quantity , or count ) tells the backend how many units of a product to place into the session array. Conclusion A parameter named num on add-cart