Not getting how to sort multidimensional array by a specific key in php

Question

it might be a duplicate of question but not getting how to do in my case.

i have a array

array([status]=>array([0]=>array([time][id])
                array([1]=>array([time][id])

tried krsort($array[status]);

but got sorting on id where as i want to do sorting according to time in descending order.