I hope someone can answer the question for me..

I'm trying to work with Session ID's. My test and development environment is Mac OSX 10.3 - running Apache, MySQL and PHP.

Now when I open a Session it generates the ID, but when I refresh the page instead of using the existing ID, it generates a new one, but also returns the error:

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at ..(name of server, file, line etc)

I'm now sure it is something to do with the environment as even I can't make a mess of

session_start ();

"We all make mistakes"....
said the Dalek getting off the dustbin...