PHP sort multidimensional array by date

Question

I\'m having a problem. I have a multidimensional array, that looks like this:

Array ( [0] => 
              Array ( 
                    [0] => Testguy         


        

Answer 1

$dates = array();       
foreach($a AS $val){
    $dates[] = strtotime($val[2]);
}
array_multisort($dates, SORT_ASC, $a);