Suppressed PHP error: auth.php | Undefined index: f_

[Stephen25]

When I activate DEBUG in config.php I get the following error on on index / forum and topic pages:

Code: Select all

[phpBB Debug] PHP Notice: in file [ROOT]/includes/auth.php on line 460: Undefined index: f_
[phpBB Debug] PHP Notice: in file [ROOT]/includes/auth.php on line 462: Undefined index: f_
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4796: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3881)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4798: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3881)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4799: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3881)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4800: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3881)

These are lines 460-463 of my /includes/auth.php:

Code: Select all

						if ($auth_ary[$this->acl_options['id'][$opt]] == ACL_YES && (!isset($bitstring[$this->acl_options[$ary_key][$option_key]]) || $bitstring[$this->acl_options[$ary_key][$option_key]] == ACL_NEVER))
						{
							$bitstring[$this->acl_options[$ary_key][$option_key]] = ACL_YES;
						}

I have this since upgrading from phpBB 3.0.9 to 3.0.10. Is it a "serious" error (meaning it could damage my board)? Btw it seems to run perfectly fine, when DEBUG is off).

How can I troubleshoot / resolve the problem?

Thanks in advance!

[Thoul]

It looks like the board is having problems reading a forum permission setting. Try clearing the board's cache from the main page of the Admin Control Panel. This should clear out some of the old cached permission settings and might take care of this.

There were no changes to includes/auth.php in 3.0.10 that could cause this issue. If the issue remains after clearing the cache, I think it is being caused by something in another file. I'm not sure which, though. Tracing how this code is used by phpBB didn't reveal anything I think would be likely to cause it.

The error messages could also just be a fluke of PHP; some versions of PHP are more touchy about Undefined indexes than others. I don't think this error could damage your board, but I'm not versed in the permission system well enough to be entirely certain.