app/Http/Controllers/Web/BuildingController.php:185:dprint
Array
(
    [city_id] => 3
    [building_status] => 1
    [0] => Array
        (
            [0] => min_rent_area
            [1] => >=
            [2] => 500
        )

    [1] => Array
        (
            [0] => max_rent_area
            [1] => <=
            [2] => 700
        )

    [2] => Array
        (
            [0] => min_price
            [1] => >=
            [2] => 5
        )

    [3] => Array
        (
            [0] => max_price
            [1] => <=
            [2] => 7
        )

    [4] => Array
        (
            [0] => building_type
            [1] => =
            [2] => 2
        )

    [5] => Array
        (
            [0] => min_price
            [1] => >
            [2] => 0
        )

    [6] => Array
        (
            [0] => min_rent_area
            [1] => >
            [2] => 0
        )

)