Converting array and objects in array to pure array

My array is like:

Array
(
    [0] => stdClass Object
        (
            [id] => 1
            [name] => demo1
        )
    [1] => stdClass Object
        (
            [id] => 2
            [name] => demo2
        )
    [2] => stdClass Object
        (
            [id] => 6
            [name] => otherdemo
        )
)

How can I convert the whole array (including objects) to a pure multi-dimensional array?