Multidimensional array sort by date

[eluser]aniketharshe20[/eluser]
Hello,

I want to sort multidimensional array by date with descending order.
How to do it??

This my array:

Code:

Array
(
    [0] => stdClass Object
        (
            [comment_id] => 15
            [comment] => test
            [added_date] => 2012-10-29 17:38:27
            [user_id] => 1          
        )

    [1] => stdClass Object
        (
            [hubb_id] => 10
            [hubb] => test
            [added_date] => 2012-12-10 17:38:27
            [user_id] => 3
        )

    [2] => stdClass Object
        (
            [comment_id] => 15
            [comment] => test
            [added_date] => 2012-11-25 17:38:27
            [user_id] => 1
        )
)

---------------------------------------------
Thanks,
Aniket