simple php if statement help

[Ripper]

i'm new to php, and I cant figure out how to do this if statement.

I've got a registration form and I'm trying to add validation to each of the inputs, but i'm stumped on the date of birth one. If users aren't 18 I need it to tell them that they cant register. What I came up with is below, and it doesn't seem to wanna work (probably cos its completely wrong ):

if ($year < 1988 and $month > 10) then;
echo "You must be 18 years of age to register";

How do i need to change it? apart from the actual maths regarding how it works out that they are 18 cos i know thats wrong already

 

[Ripper]

cheers, i think that works. Although i just noticed that it should be > 1988 rather than less than, hehe. Cheers

 

[Ripper]

nah still not working really as I want it to. At the moment if someone tries to register who were born in 2003 they dont get the message if they enter a month lower than 10. How can i change this to work properaly?

And how can i get this to work with the system date or something, because in a years time an 18 year old wouldn't be able to register based on the >1988 stuff in there at the moment

 

[Ripper]

what do i need to put in there to alert the user on the page that they need to be 18? echo "blablabla"; im guessing, but where?

 

[Ripper]

Cheers guys i think it works now

I'm sure your tutor at Staffs uni would just love to see this thread

Why's that? i'm being pointed in the right direction and trying to learn how to do something that we havn't been taught. I'm not going to learn php without someone/something explaining how things are done.