โจทย์ PHP ให้เจตลองทำ

//ข้อมูลเดิมมีชุด array() ให้ดังนี้
$oldDatas = array(
    array(
    "rv_code" => "RV0001",
      "id" => 1,
      "work" => "งานสร้างถนน",
      "price" => 500000
    ),
    array(
    "rv_code" => "RV0001",
      "id" => 2,
      "work" => "งานสร้างบ้านจัดสรรค์",
      "price" => 2000000
    ),
    array(
    "rv_code" => "RV0001",
      "id" => 3,
      "work" => "งานสร้างโรงพยาบาล",
      "price" => 15600000
    ),
    array(
    "rv_code" => "RV0002",
      "id" => 1,
      "work" => "งานทำสระน้ำ",
      "price" => 250000
    ),
    array(
    "rv_code" => "RV0002",
      "id" => 2,
      "work" => "งานทุบตึก",
      "price" => 670000
    ),
    array(
    "rv_code" => "RV0003",
      "id" => 1,
      "work" => "งานก่อสร้างกำแพง",
      "price" => 150000
    )
);

//ต้องการให้จัดรูปแบบข้อมูลใหม่ให้ได้ตามรูปแบบนี้ อนุญาตให้ใช้ทุกคำสั่งตามสะดวก

$newDatas = array(

      array(
    "rv_code" => "RV0001",
    "detail" => array(
        array(
          "id" => 1,
          "work" => "งานสร้างถนน",
          "price" => 500000
        ),
       array(
         "id" => 2,
          "work" => "งานสร้างบ้านจัดสรรค์",
          "price" => 2000000
       ),
       array(
         "id" => 3,
      "work" => "งานสร้างโรงพยาบาล",
      "price" => 15600000
               )
        )
    ),
        array(
    "rv_code" => "RV0002",
    "detail" => array(
        array(
            "id" => 1,
      "work" => "งานทำสระน้ำ",
      "price" => 250000
        ),
       array(
       "id" => 2,
      "work" => "งานทุบตึก",
      "price" => 670000
               )
        )
    ),
          array(
    "rv_code" => "RV0003",
    "detail" => array(
        array(
          "id" => 1,
      "work" => "งานก่อสร้างกำแพง",
      "price" => 150000
        )

        )
    )

  );

//ขอให้โชคดีกับการสอบ