Addcartphp Num High | Quality

For certain goods (fabric, weight-based products), num can be a float. Extend validation:

$num = filter_input(INPUT_POST, 'num', FILTER_VALIDATE_FLOAT); if ($num === false || $num <= 0) die('Invalid quantity'); addcartphp num high quality

// HIGH QUALITY: Strict numeric validation with reasonable defaults if ($num === false || $num === null) // Not a valid integer http_response_code(400); die(json_encode(['error' => 'Quantity (num) must be a valid integer'])); For certain goods (fabric, weight-based products), num can

This uses FILTER_VALIDATE_INT (not intval() ), which distinguishes between 0 , null , and false . It rejects decimals, strings, and empty values explicitly. 2.2. Checking Inventory Before Adding A premium addcartphp script never assumes stock. It queries the database live. $_POST['num'] = '5'

$_POST['num'] = '5'; $_POST['product_id'] = '101'; $this->expectOutputRegex('/"success":true/'); include 'add_to_cart.php';

// HIGH QUALITY: Maximum quantity limit (business rule) $MAX_QUANTITY = 99; if ($num > $MAX_QUANTITY) http_response_code(400); die(json_encode(['error' => "Maximum quantity per item is $MAX_QUANTITY"]));

public function testAddToCartWithInvalidStringNum()