Home » Authentication » Auth_PrefManager » Bug #2975

[2004-12-16 06:12 UTC] aashley at optimiser dot com

Description:
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With the upgrade to PHP5.0.3 is_subclass_of generates a warning message if the class you are checking to see if the object is a subclass off has not yet been defined.

Due to the way DB works if DB::connect has not yet been called then DB_common and DB_<db specific> will not yet of been included and as such defined. So when passing in a DSN string and expecting Auth_PrefManager to make its own connection the following warning is generated:

Warning: Unknown class passed as parameter in PrefManager.php at line 131
Backtrace
/var/www/<site>/objects/Auth/PrefManager.php:myErrorHandler() at line 131 in PrefManager.php
/var/www/<site>/objects/Auth/PrefManager.php:is_subclass_of() at line 131 in PrefManager.php
/var/www/<site>/index.php:Auth_PrefManager->Auth_PrefManager() at line 146 in index.php

Note: Prefmanager is in our own file tree and not its own at this point as we require the previously submitted patch in bug #2512 for the site to work. Other than that applied patch the file is identical.

This problem is also only most annoying when using a custom error handler function. The user error function since 5.0.1 ignores all the built in limits on errors so @ doesnt work to squash it and the error_reporting ini setting has no effect on what is passed to the function.

As such to fix this problem I have reordered the checks in Auth_PrefManager::Auth_PrefManager(). First it checks if dsn is a string, then checks if its a subclass of DB_common. This will prevent the most common occurance of this problem. A warning will still however be generated if an something other than a DB_common object is passed and DB_common has not yet been loaded.

Fix is available at http://frood.cernun.net/stuff/PrefManager.php-reorder-checks.patch

[2004-12-16 06:13 UTC] aashley at optimiser dot com

gah Note should read:

Note: Prefmanager is in our own file tree and not in the usual PEAR objects tree in this site as we require the previously submitted patch in bug #2512 for the site to work. Other than that applied patch the file is identical.

[2005-10-05 10:17 UTC] u dot gioia at sinedita dot it

Got the same problem using HTML_QuickForm which in the class select.php use the function is_subclass_of

Any triks to solve the problem?