Array
(
    [foo] => Array
        (
            [secret] => my hidden value
            [product-id] => 1
            [submit] => Add this product to your cart
        )

    [bar] => Array
        (
            [secret] => my hidden value
            [product-id] => 2
        )
    [baz] => Array
        (
            [secret] => my hidden value
            [product-id] => 3
        )
)