Grouping Multidimensional Arrays by Particular Value with nested Standard Class Objects

In a previous post there was a very helpful answer on grouping multidimensional arrays. My issue is similar with the twist that my initial array has a nested standard class object. My array looks like this:

Array
(
    [0] => stdClass Object
        (
            [InstallationAddress2] => LAKEWOOD, CA  90000
            [LineitemmasterDescription] => Apples
            [Workorder_id] => W008052094
        )

    [1] => stdClass Object
        (
            [InstallationAddress2] => Santa Rosa, CA  90230
            [LineitemmasterDescription] => Berries
            [Workorder_id] 开发者_StackOverflow=> W008022342
        )

    [2] => stdClass Object
        (
            [InstallationAddress2] => LAKEWOOD, CA  90000
            [LineitemmasterDescription] => Apples
            [Workorder_id] => W008052094
        )
)

Like the previous post I'm hoping to get something like

Array
(
    [1] => Array
        [0] => Array
            (
            [InstallationAddress2] => LAKEWOOD, CA  90000
            [LineitemmasterDescription] => Apples
            [Workorder_id] => W008052094
           )

        [1] => Array
          (
            [InstallationAddress2] => LAKEWOOD, CA  90000
            [LineitemmasterDescription] => Apples
            [Workorder_id] => W008052094
          )

        [2] => Array
        (
            [InstallationAddress2] => Santa Rosa, CA  90230
            [LineitemmasterDescription] => Berries
            [Workorder_id] => W008022342
        )
)

The thing I'm stumbling over is the standard class object which refuses to be cast into an array.

---

do (array) type cast of each of the std objects by looping through your array.

for($i=0;$i< count($myArray);  $i++)
    $myArray[$i] = (array)$myArray[$i];

Then you can apply your grouping logic. See typecasting example : http://codepad.org/uVuBzBm8