bbPress.org

I am trying to set my own cookies with information bbPress doesn’t keep track of to use in my forum, but I get an error saying I “Cannot modify header information.” I’m not using wordpress.

Is there an easy way for me to integrate cookies with a specific prefix or something with bbPress so I can make my own cookies? Also, if it would be easier, is there a way for me to make my own global variables in the same manner?

My goal is to find some way to store additional information so I don’t have to access my database every time I refresh the page.