PHP使用命名键对数组进行排序

Question

我有一个$ _POST数组，我想重新格式化处理。 $ _POST的转储如下所示：

Array
(
[question_0] => Why Wordpress is the best
[question_0_answer_0] => First Choice
[question_0_answer_1] => Second Choice
[correct0] => question_0_answer_3
[question_0_answer_3] => adrian stinks
[question_1] => Who do you love?
[question_1_answer_0] => First Choice
[question_1_answer_1] => Second Choice
[question_1_answer_2] => Third Choice
[question_2] => What is your name?
[question_2_answer_0] => First Choice
[question_2_answer_1] => Second Choice
[question_2_answer_2] => Third Choice
[quiz_id] => 17
[submit] => Save Quiz
)

我想整理并获得一个看起来像这样的排序数组：

$fields=array(
array(
    type=>radio,
    text=>Why wordpress is the best
    choices=>array(
        array(
            text=>First Choice,
            value=>First Choice,
            is_correct=>FALSE
        ),
        array(
            text=>First Choice,
            value=>First Choice,
            is_correct=>FALSE           
        ),
        array(
            text=>Adrian Stinks,
            value=>Adrian Stinkse,
            is_correct=>TRUE           
        )
    )
),
array(
    type=>page //divider
),
array(
   type=>radio,
    text=>Who do you love?
    choices=>array(
        array(
            text=>First Choice,
            value=>First Choice,
            is_correct=>TRUE
        ),
        array(
            text=>First Choice,
            value=>First Choice,
            is_correct=>TRUE           
        ),
        array(
            text=>Third Choice,
            value=>Third Choice,
            is_correct=>FALSE           
        )
    ) 
),
array(
    type=>page //divider
),
array(
   type=>radio,
    text=>What is your name?
    choices=>array(
        array(
            text=>First Choice,
            value=>First Choice,
            is_correct=>TRUE
        ),
        array(
            text=>First Choice,
            value=>First Choice,
            is_correct=>TRUE           
        ),
        array(
            text=>Third Choice,
            value=>Third Choice,
            is_correct=>FALSE           
        )
    ) 
),
)

我如何实现这种排序？提前谢谢！