Couple Questions

I'm new to this list (and relatively new to PHP) so if I'm failing in some point of list ettiquette, please excuse me. I have two questions: 1) How do I return multiple data types at once from a function? For instance I might want to return 5, "apple", and true (an int, a string, and a boolean) all at once from a function. 2) How does the predefined variable $HTTP_REFERER work with forms? I know the documentation says that it doesn't work with all browsers as the browser has the actual info but I tested it with IE 5 and NS 4.7 and it worked perfectly (for me). My real concern is could it be fooled in a simple manner or even turned off by selecting different settings in either of those two browsers? Or would it require a dedicated cracker and/or someone writing their own browser to give a false report (vs. no report at all)? Was I even clear on what I want to know? :) Thanks. Allan