Well, lets assume that when you say "command" you really mean function (I'm really not sure, so that is the premise I will use, you should be able to adapt it.) Take a look here:
http://www.php.net/date
This will show you how to use the date() function in php. The function you really want is this:
function get_date() {
// The format for mm/dd hh:mm is m/d h:i
$current_date = date("m/d h:i");
// now return it.
return $current_date;
}
Now, in your code, if you do:
$date = get_date();
The variable $date will contain the current date in the format mm/dd hh:mm. Hope that helps!
Chris King