This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.



Helper functions to make developing solutions with WordPress MU or BuddyPress easier. Right now there is a function to return all posts from all blogs, and one to return all comments on all blogs. The code is well commented with phpdoc blocks, so read the source for more info. This plugin is for developers and will do nothing on its own (except provide functions to developers that don’t exist in the core API)


The WordPress-MU Helpers plugin was developed by Eric Marden, and is provided with out warranty under the GPLv2 License. More info and other plugins at:

Copyright 2010 Eric Marden (email :

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA


  1. Download the file, unzip and upload the whole directory to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress.
  3. Utilize the functions it provides in building your own plugins or in your theme.


Why would I want this?

If you’ve ever tried to develop complex solutions with WordPress MU or BuddyPress then no doubt you’ve found that there are quite a few functions missing from the API, especially when trying to pull content from all of the blogs on your MU instance. This plugin represents an evolving library of functions to make these types of tasks easier to complete.

I want to help with development of this Plugin!

The project is now hosted on Just fork the project and send me a pull request.

New to git?

Contributors & Developers

“MU-Helpers” is open source software. The following people have contributed to this plugin.


Translate “MU-Helpers” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • Plugin now links to dedicated plugin page where users can get support, ask questions, and provide feedback.


  • Added get_all_blog_comments() function


  • Using quicksort algorithm to efficiently order the merged posts array


  • Added get_all_blog_posts() function