Is user logged in function

I am using buddypress in a website that I have developed. I want to disable “REGISTER HERE” buttons if the user is already logged in, or at least put a message close to buttons if user is logged in…how can i do that…or another option is if they are already registered, if they click on the button it takes them to a page that says that they are already logged in and they can see their profile or activity

• This topic was modified 7 years, 1 month ago by alysonmac.

The page I need help with: [log in to see the link]