Redirection after logging in?

[Civik]

Im trying to write a simple login script that if you put in the right username and password, you get redirected to a page such as google.ca for an example, but if not it just says wrong password.

I have everything working so far except for the redirection part.

[PaulButler]

Use the location header

php:

header("Location: http://absolute-path.to/new/location.html");