How to sort photos in order of likes, comments entries desc. Need to get all rows of photos, photo.comments, photo.likes


photos
------------
id
url
created
modified

likes
--------
id
photo_id
user_id
created
modified

comments
----------
id
photo_id
user_id
comment
created
modified


Example : if comments or likes have a new entry, this photo should be first.


Data Example Output

Photo
(
    [0] => Array
        (
            [id] => 1
            [file_name] => 20111012073528_1_1.jpg
            [created] => 2011-10-12 11:05:28
            [modified] => 2011-10-12 11:05:28
            [Comment] => Array
                (
                    [0] => Array
                        (
                            [id] => 8
                            [photo_id] => 8
                            [guest_id] => 4
                            [comment] => dfgdfg
                            [created] => 2011-10-13 07:53:54
                            [modified] => 2011-10-13 07:53:54
                        )
		)

            [Like] => Array
                (
                    [0] => Array
                        (
                            [id] => 2
                            [photo_id] => 1
                            [guest_id] => 4
                            [created] => 2011-10-12 07:41:21
                            [modified] => 2011-10-12 07:41:21
                        )

                )

        )

    [1] => Array
        (
            [id] => 2
            [file_name] => 20111012073528_1_2.jpg
            [created] => 2011-10-12 11:05:28
            [modified] => 2011-10-12 11:05:28
            [Comment] => Array
                (
                )

            [Like] => Array
                (
                )

        )