Comments on: Implementing the WordPress Shared Users Table Trick

By: Eric Marden

Eric Marden — Fri, 30 Dec 2011 18:21:13 +0000

I don’t see why not. Subdomains just map to virtual hosts (most likely) on the server. But as long as they can all talk to the same MySQL instance, you’ll be able to pull this off just fine. However, I would recommend taking a look at the network feature in WordPress 3.0+ too, to see if that wouldn’t better solve your needs.

By: Mike the Lawyer

Mike the Lawyer — Fri, 09 Dec 2011 17:50:23 +0000

Eric – great article. Does this “trick” work on subdomains? In addition, here’s a complex question – if you’ve got an existing subdirectory based install, could you synch separate installs on subdomains using this? It would be super grand if that was in the affirmative!

By: Eric Marden

Eric Marden — Tue, 01 Nov 2011 21:13:31 +0000

I’ve never done this, but I would copy the user tables over and once you’ve confirmed the two blogs are separate, just use wp-admin to remove the users you no longer want on the second site (or just set them all as subscriber).

By: Eric Marden

Eric Marden — Tue, 01 Nov 2011 21:12:20 +0000

Something like this *is* possible, but not with this plugin.

By: Eric Marden

Eric Marden — Tue, 01 Nov 2011 21:11:38 +0000

Its possible, but outside of the scope of this plugin/technique. However, you might want to check out WordPress 3.0′s network features. It supports that scenario out of the box more or less.

By: Svenson

Svenson — Tue, 18 Oct 2011 08:37:28 +0000

Hi,
Nice info, Thx.
Did anyone find an easy way to stay logged in for users on all sites (site1.com, site2.com,…) ex: logged in on site1 goes to site2 and don´t need to login again?
How to share cookies between those sites?

Thank you,

Svenson

By: dimis

dimis — Wed, 05 Oct 2011 09:52:56 +0000

Hello,I have already a user table at my site.Can I use it for the user management of a word-press blog?It has a different schema .
How can user login with these credentials?(of the existing table)

By: Max

Max — Thu, 15 Sep 2011 00:56:21 +0000

Hey, it works! Thanks! Just added a 2nd blog on a subdomain which shares users with an existing main site. Tricky, but doable.

By: Stefhan

Stefhan — Tue, 13 Sep 2011 12:28:28 +0000

These instructions worked brilliantly for implementing a shared user table. Unfortunately I now need to reverse the process – ie create two separate user and user meta tables from the one.

Presumably I remove:

define(‘CUSTOM_USER_TABLE’, ‘wp_users’);
define(‘CUSTOM_USER_META_TABLE’, ‘wp_usermeta’);

from wp-config.php but will I then be locked out of the second blog as it will no longer have a usertable?

I don’t need to copy all the user data across to the second blog, but I’m concerned about being unable to login.

Any top tips for reversing the process would be much appreciated!

Thanks

Stefhan

By: Hotchkissmade!

Hotchkissmade! — Thu, 07 Jul 2011 18:06:22 +0000

[...] as it designed so that deployment of a finished product is quick and painless. At first I wanted to share user tables, but the orphan problems created by that hack were complicated and the solutions were not secure [...]