mktime month

["Mark Steudel" <mark@xxxxxxxxxxxx>]

Im a little confused on the number I should use for the month:
 
Take the following:
 
echo date('Ymd', mktime(0, 0, 0, 3, 0, date("Y")) );
 
I expected it to output: 20060331
 
But instead it outputs 20060228.
 
In the examples for january in the php manual I get december instead of
january.
 
Is there a server config or any ideas what I am doing wrong?
 
Thanks, Mark