Quote Originally Posted by lat9 View Post
You'd just follow the "pattern" in that extras file, using (most likely)
Code:
$_SESSION['cart']->in_cart_check('master_categories_id', {product-id to be checked});
That just returns a zero, since there is no master category with that number. I don't see how it could work, since I'm not looking at a master category of 171, but a product id of 171.