Description:
------------
Hello,

i have d-m-yyyy and i want yyyy-mm-dd

example:

i have the date 1-2-2004 and i want 2004-02-01

how i can format the date??

i try with mktime() and list() but the result is incorrect
can anybody help me please?

thanks!

pd: sorry for my english



Reproduce code:
---------------
for example:

$data="1-2-2004";
list( $day, $month, $year ) = split( '-', $alta );
$alta=date("Y-m-d", mktime(0,0,0,$month,$day,$year)); 

Expected result:
----------------
i expect 2004-02-01

Actual result:
--------------
actual result: 1999-02-01