Add-cart.php Num ((link)) «macOS»
// basic validation if ($product_id <= 0 || $num <= 0) http_response_code(400); echo json_encode(['error' => 'Invalid input']); exit;
// Add to cart function with AJAX function addToCart(productId, quantity) fetch(`add-cart.php?id=$productId&num=$quantity`, headers: 'X-Requested-With': 'XMLHttpRequest' add-cart.php num
In poorly architected legacy systems or beginner PHP projects, add-cart.php acts as a direct gateway to the cart session. The num parameter typically represents one of two things: // basic validation if ($product_id <= 0 ||
https://vintage-books.com/add-cart.php?num=12 // basic validation if ($product_id <
The add-cart.php script is often a blind spot for session management. Attackers combine num injection with .
If the application uses floating-point arithmetic without rounding, a num of 1.9999 multiplied by a price of $9.99 might be rounded down due to floating-point errors, or processed as 1.9999 units.