使用CakePHP中的集合在另一个groupBy中组织groupBy

我有以下数组，我希望能够通过收集来组织它

$collection =  Collection($total);
$filter = $collection->groupBy('date_general')->toArray();

[2017-11-14] => Array
    (
        [0] => Array
            (
                [status] => pending
                [date_general] => 2017-11-14
                [user_id] => 164
            )

        [1] => Array
            (
                [status] => pending
                [date_general] => 2017-11-14
                [user_id] => 112
            )
    )

到目前为止，我已经有了按日期组织的数组。现在，在每个日期内，我需要按用户进行组织，也就是说：

[2017-11-14] => Array
    (
        [164] => Array
            (
                [0] => Array
                    (
                        [status] => pending
                        [date_general] => 2017-11-14
                        [user_id] => 164
                    )
            )
        [112] => Array
            (
               [0] => Array
                (
                    [status] => pending
                    [date_general] => 2017-11-14
                    [user_id] => 112
                )
            )
    )

---

您必须处理每个日期组，并单独对其内容进行分组

$collection = collection($total)
    ->groupBy('date_general')
    ->map(function ($data) {
        return collection($data)->groupBy('user_id')->toArray();
    });

另见

---

您必须处理每个日期组，并单独对其内容进行分组

$collection = collection($total)
    ->groupBy('date_general')
    ->map(function ($data) {
        return collection($data)->groupBy('user_id')->toArray();
    });

另见