I want to add products to the shopping cart in PHP - Stack Overflow
A file named add-cart.php typically handles the server-side logic for adding a product to a shopping cart session in custom PHP e-commerce applications. The parameter num (often abbreviated for "number") usually refers to the of the item being added. Role of add-cart.php
While utilizing $_SESSION arrays works perfectly for smaller custom storefronts, scaling up often requires alternative architectures:
// Check stock availability (optional) $product = getProductDetails($product_id); if ($product && $quantity > $product['stock']) if ($response_type == 'json') echo json_encode(['success' => false, 'error' => 'Insufficient stock']); exit; add-cart.php num
The file paired with a num variable is a classic architecture used in custom e-commerce websites to handle adding products to a shopping cart.
header('Location: cart.php'); exit;
If the application fails to sanitize this input, the SQL query becomes: INSERT INTO cart (product_id, quantity) VALUES (1, '1'; DROP TABLE users;--') I want to add products to the shopping
echo "Added " . $_GET['num'] . " of " . $product['name'];
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:
❌ → Allows denial‑of‑stock by adding 9999+ items. header('Location: cart
Separate your parameters clearly. Use:
</body> </html>
The file add-cart.php is a well-known target in web security. It appears in several major , such as: SecLists' raft-large-files FuzzDB's predictable filepaths