id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
21055	Interface for wpdb compatibility	santec		"==Summary==

From the wp-includes/wp-db.php file:
{{{
It is possible to replace this class with your own
by setting the $wpdb global variable in wp-content/db.php
file to your class. The wpdb class will still be included,
so you can extend it or simply use your own.
}}}

When one implements a db class that does not extend wpdb, it would be safer that the new class implements an interface. This interface may be called wpdb_compat and would assure that the class has all necessary methods/properties. Of course, wpdb_compat should be supported by wpdb too.

== Design Strategies ==

My patch adds:
* wp-includes/interfaces/wpdb-compat.php

Very small edits to:
* wp-includes/wp-db.php
* wp-includes/load.php
* wp-admin/install.php

At the moment, WordPress does not include any interface; this means that there is not a directory for interfaces.[[BR]]
In my first draft, I put it in wp-includes/interfaces so that - if more interfaces will be added in the future - they will have a logical place.
"	feature request	new	normal	Awaiting Review	Database		normal			kpayne@… scribu