Addcartphp Num High Quality

$_SESSION[ ][$product_id] = $quantity; json_encode([ "Item added!" json_encode([ "Invalid quantity" ]);

Always cast inputs like quantity to integers and prices to floats to prevent injection or errors. addcartphp num high quality

A poorly managed num can cause negative inventory, double charges, or broken cart totals. $_SESSION[ ][$product_id] = $quantity

session_start(); require_once 'db.php'; require_once 'csrf.php'; or broken cart totals. session_start()

function addToCart($productId, $quantity) // Assuming $productId and $quantity are validated and sanitized // Product details are fetched from the database $product = fetchProductFromDB($productId);