) can crash the calculation logic or cause the price to wrap around to zero. Decimal Injection
When handling inputs via URL (GET), security is crucial to prevent SQL injection or malicious manipulation of quantities. add-cart.php num
When a user clicks "Add to Cart," the system typically sends data to add-cart.php via a POST or GET request. The ) can crash the calculation logic or cause
// 5. Initialise the session cart array if needed if (!isset($_SESSION['cart'])) $_SESSION['cart'] = []; When analyzing web traffic logs
When analyzing web traffic logs, security audits, or search queries, the phrase frequently appears. This specific query highlights a common structural pattern—and a critical security risk—in web development: passing product identification numbers directly through URL parameters without proper validation. What is add-cart.php?num= ?