Add-cart.php Num May 2026

$product_id = filter_input(INPUT_POST, 'product_id', FILTER_VALIDATE_INT, ['options' => ['min_range' => 1]]); $quantity = filter_input(INPUT_POST, 'quantity', FILTER_VALIDATE_INT, ['options' => ['min_range' => 1, 'max_range' => 99]]); if (!$product_id || !$quantity) http_response_code(400); die('Invalid request');

https://vintage-books.com/add-cart.php?num=12 add-cart.php num

Never trust user input. Always validate data types. Never use GET requests to modify state. And for the love of security, move away from raw add-cart.php scripts and toward modern, token-authenticated POST endpoints. $product_id = filter_input(INPUT_POST