Add-cart.php Num !!link!! Jun 2026

If your website still uses legacy scripts like add-cart.php?num= , consider the following steps to secure your store:

If the victim clicks, their cart is associated with the attacker’s session ID. Later, the attacker can view the cart contents or manipulate the num parameter to change what the victim buys.

Validate that num is a scalar integer before passing it to any database driver. add-cart.php num

INSERT INTO cart (user_id, product_id, quantity) VALUES (?, ?, ?) ON DUPLICATE KEY UPDATE quantity = quantity + VALUES(quantity);

Or, via GET method (less secure, but common): /add-cart.php?product=456&num=3 If your website still uses legacy scripts like add-cart

catch (PDOException $e) // Rollback if error occurs $pdo->rollBack(); error_log("Cart Error: " . $e->getMessage()); header("Location: products.php?error=database_error"); exit();

<?php session_start(); if(isset($_GET['id']) && isset($_GET['num'])) $product_id = $_GET['id']; $quantity = $_GET['num']; // No validation! $_SESSION['cart'][$product_id] = $quantity; header('Location: cart.php'); INSERT INTO cart (user_id, product_id, quantity) VALUES (

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.