[RESOLVED] mysterious warning message "Warning: Unknown..."

sig

Occasionally as my code goes out and opens a folder containing pictures to
display, I get the following message at the bottom of the page(despite the fact that the pictures, titles and captions all display accurately)

"Warning: Unknown; Your script possibly relies on a session-side effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data,unless register_globals is enabled.
You can disable this funtionality and this warning by setting session.bug_compat_42 or session.bug_warn to off, respectively in Unknown on line 0"

I have gone into the Php.ini file and set both session.bug_compat_42 and
session.bug_warn to zero but the error persists!!

Suggestions anyone. Thank you.

NogDog

Did you restart the web server after making those changes? In any case, the best bet is to (a) turn off register_globals, (b) do not use session_register(), and (c) as forced to do by the previous 2 items, always access session values via the $_SESSION array. This will make your code up-to-date in terms of session-related best practices, ensure that it is portable to any PHP system, and get rid of that notice.

sig

Thanks NogDog. I made sure register_globals was off; I'm not using the
session_register() function, but I'm still getting the warning message!

NogDog

Do you assign an $SESSION values to other variables? I think that can generate this error if the $SESSION element in question is unset or null.

sig

Nogdog, I came across something that solved the problem but I don't know
why exactly it solved the problem. At the top of the code, just after my
SESSION_START(); line, I placed the following:

ini_set('session.bug_compat_42',0);
ini_set('session.bug_compat_warn',0);

whaa la! no more warnings!

cheers,
Sig