Add-cart.php: Num

This script is a core component of e-commerce functionality, handling cart state management (session/database), validation, and response logic.

// In the form <input type="hidden" name="csrf_token" value="<?php echo $_SESSION['csrf_token']; ?>">

🔒 Critical Vulnerabilities Associated with add-cart.php?num= add-cart.php num

<?php session_start();

An attacker should not be able to call add-cart.php 1000 times per second. Implement a token bucket or store a timestamp in the session: This script is a core component of e-commerce

: It is frequently used as the action attribute in an HTML form or as a direct link (e.g., Add to Cart ).

$productId = $_GET['id']; $quantity = $_GET['num']; $sql = "SELECT * FROM products WHERE id = $productId"; $productId = $_GET['id']; $quantity = $_GET['num']; $sql =

The script checks if a $_SESSION['cart'] exists. If not, it initializes one to track items as the user browses.

Reassures the customer visually that their item was registered by the server. 5. Moving Beyond Sessions: Modern Alternatives

A raw add-cart.php file is a prime target for hackers. Here is how to harden it:

The script usually receives data via a GET or POST request. Let's assume the request looks like add-cart.php?id=123 .