Array
(
    [post_type] => product
    [posts_per_page] => 40
    [paged] => 1
    [post_status] => publish
    [tax_query] => Array
        (
            [relation] => AND
            [0] => Array
                (
                    [taxonomy] => product_cat
                    [field] => id
                    [terms] => Array
                        (
                            [0] => 15
                        )

                )

        )

    [meta_query] => Array
        (
            [relation] => AND
            [0] => Array
                (
                    [meta_key] => _stock_status
                    [value] => instock
                    [compare] => =
                    [type] => CHAR
                )

        )

    [order] => 
    [orderby] => Array
        (
            [meta_value] => ASC
            [post_date] => DESC
            [menu_order] => DESC
            [ID] => DESC
        )

)