Sort Multi Array in PHP

Question

Does anybody have an idea how can I sort this array by key (date) in PHP?

Array
(   
    [2011-02-16] => Array
        (
            [date] => 2011-02-16
          


        

Answer 1

http://www.php.net/manual/en/function.array-multisort.php

Would example #3 suit your needs?