A newbie question on array

From: Marco (ver_for_at_yahoo.it)
Date: 02/22/05 

Date: 22 Feb 2005 09:02:02 -0800

Hi,

I have a list of variables, for instance
$var1= '12';
$var2= '16';
$var3= '15';

I want to know what is the max and which the name of the corresponding
variable. In other words that the max value is 16 and the varible is
$var2 .

I suppose that i should use an array but which kind?

Thanks in advance for your answers