Forgive me for posting, because this is probably really simple, but I can't get it to work!

I'm designing the site so that each user can have their own login and password, which i have done successfully, but now i want to print the current date and time next to their greeting on the front page. I haven't learnt PHP from the basics up (fool that I am), only the bits I have needed to know.

I've tried searching the manual but can't understand how to call the current date and time into a variable and then print the variable. Yes, I am a buffoon! Any help would be really appreciated ;-)

Thanks in advance.