Add-cart.php Num [upd] Today
<?php session_start();
When a user clicks "Add to Cart," the system typically sends data to add-cart.php via a POST or GET request. The add-cart.php num
add-cart.php?num=2&token=randomSHA256
if (isset($_SESSION['last_cart_action']) && (time() - $_SESSION['last_cart_action']) < 0.5) header('HTTP/1.1 429 Too Many Requests'); exit; Stock Verification : Always check the database to
: Attackers use tools like Burp Suite to intercept the request and change after the client-side validation has already passed. ✅ Best Practices for Prevention Force Absolute Integers abs(intval($_POST['num'])) to ensure the value is always a positive whole number. Stock Verification : Always check the database to ensure does not exceed available inventory_count Server-Side Caps : Set a maximum allowable quantity per item (e.g., max 99). Re-validate on Checkout 0.5) header('HTTP/1.1 429 Too Many Requests')
: A unique numerical identifier for the item being added (e.g., num=101 ).
// Success response header('Location: cart.php'); exit;