In web development, particularly in PHP-based e-commerce systems, add-cart.php (or similar filenames like cart_update.php or handlecard.php ) serves as the responsible for adding items to a user's virtual shopping cart. Core Functionality
❌ → Vulnerable to CSRF (attackers can force adds via <img src="add-cart.php?num=99"> ). add-cart.php num
The script should follow these functional steps to ensure reliability: The script should follow these functional steps to