This specific file name and parameter string ( add-cart.php?num= ) are frequently cited in "Google Dorks" or lists used for identifying common web application paths for testing vulnerabilities. Security researchers and developers use these patterns to locate scripts that might be susceptible to if the num parameter is not properly sanitized or bound before being used in a query. A Shopping Cart using PHP Sessions - PHP Web Applications
Often, lazy developers combine both. A request like add-cart.php?num=1 might mean "add 1 unit of product #1". The danger lies not in the concept, but in the . add-cart.php num
: Robust add-cart.php scripts validate that num is a positive integer and that the requested quantity does not exceed the available stock. This specific file name and parameter string ( add-cart
add-cart.php Purpose: Server-side script to add a product to a user's shopping cart. Key Parameter: num – represents the quantity of the product to be added. A request like add-cart
if ($product_id <= 0) die("Invalid product.");
The num parameter (often named qty , quantity , or count ) tells the backend how many units of a product to place into the session array.