Addcartphp Num High Quality Repack

-- Products table CREATE TABLE `products` ( `id` INT(11) UNSIGNED AUTO_INCREMENT PRIMARY KEY, `sku` VARCHAR(50) NOT NULL, `name` VARCHAR(255) NOT NULL, `price` DECIMAL(10,2) NOT NULL, `stock_quantity` INT(11) NOT NULL DEFAULT 0, `status` TINYINT(1) DEFAULT 1, INDEX `idx_stock` (`stock_quantity`, `status`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4; -- Optional: Persistent carts (for logged-in users) CREATE TABLE user_carts ( id INT(11) UNSIGNED AUTO_INCREMENT PRIMARY KEY, user_id INT(11) UNSIGNED NOT NULL, product_id INT(11) UNSIGNED NOT NULL, quantity INT(11) UNSIGNED NOT NULL, added_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, UNIQUE KEY unique_user_product ( user_id , product_id ) ) ENGINE=InnoDB; Below is the complete, production-ready addcart.php script. Note how it handles the num parameter with rigorous validation.

if (!$product) die(json_encode(['error' => 'Product not found or unavailable'])); addcartphp num high quality

<?php // addcart.php - High Quality Implementation session_start(); require_once 'config/database.php'; require_once 'includes/csrf.php'; require_once 'includes/sanitize.php'; // Only accept POST requests for security if ($_SERVER['REQUEST_METHOD'] !== 'POST') http_response_code(405); die(json_encode(['error' => 'Method not allowed'])); -- Products table CREATE TABLE `products` ( `id`