[RESOLVED] Problem with headers and cookies.

[paddycallaghan]

I am building a user authentication system from the PHP5 & MySQL Bible, and I am getting some problems after the login script.

Here is the error.

Warning: Cannot modify header information - headers already sent by (output started at /login_funcs.inc:41) in /login_funcs.inc on line 80

Warning: Cannot modify header information - headers already sent by (output started at /login_funcs.inc:41) in /login_funcs.inc on line 81

Warning: Cannot modify header information - headers already sent by (output started at /login_funcs.inc:41) in /login.inc on line 26

I can tell you that in 'login_funcs.inc' line 80 and 81 are both setting cookies, and that line 26 in 'login.php' is trying to redirect using header("Location: index.php");

I don't know what the :41 means, or why this is throwing up a problem.

If anyone can shed some light then great. Thanks

Or does anyone else know of a decent user authentication script that i can implement instead

[Weedpacket]

/login_funcs.inc:41 refers to line 41 of the file named "login_func.inc". Like the error message says, it is producing output and once output has been produced the headers can't be altered.
One of the first threads that would turn up when searching here for information about this error would be
http://www.phpbuilder.com/board/showthread.php?s=&postid=10453971#post10453971