How do you reindex an array in PHP but with indexes starting from 1?

I have the following array, which I would like to reindex so the keys are reversed (ideally starting at 1):

Current array (edit: the array actually looks like this):

Array ([2] => Object    (        [title] => Section        [linked] => 1    )[1] => Object    (        [title] => Sub-Section        [linked] => 1    )[0] => Object    (        [title] => Sub-Sub-Section        [linked] =>     ))

How it should be:

Array ([1] => Object    (        [title] => Section        [linked] => 1    )[2] => Object    (        [title] => Sub-Section        [linked] => 1    )[3] => Object    (        [title] => Sub-Sub-Section        [linked] =>     ))