Add-cart.php Num [2026 Release]

Query database for product stock, status, price.

(often mapped to parameters like qty , quantity , or num ) add-cart.php num

$product_id = isset($_POST['product_id']) ? (int)$_POST['product_id'] : 0; $quantity = isset($_POST['num']) ? (int)$_POST['num'] : 1; Query database for product stock, status, price

: Passing add-cart.php?num=-5 might subtract items from the cart or, in poorly written scripts, reduce the total checkout price into negative balances. (int)$_POST['num'] : 1; : Passing add-cart

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

$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]]);

# Add 3 items of product ID 5 add-cart.php?id=5&num=3