Shoutbox

How do I write the current system time (hours, minutes and seconds) to a txt file I already created?

The only thing I found was this:
http://www.mpscripts.net/code.php?id=29

I think it has something to do, but I couldn't make anything

Sory if this is a very stupid question.. Im a newbie xD

Thanks!!

EDIT: Just to make things easier, I already now how to add a line to a file, I just want to know how to set a variable containing the current time.