Array
(
    [banane] => Array
        (
            [qtt] => 5
            [prix] => 2
        )

    [kiwi] => Array
        (
            [qtt] => 10
            [prix] => 3
        )

    [orange] => Array
        (
            [qtt] => 20
            [prix] => 4
        )

)

le total du panier est 120€