WordPress MU

How about something that sends an email to you everytime a user hits an error...and it also tells you what error is encountered.

Has this been done already? Thanks

Define "hits an error".

Like a 404 error, or a code error that's handled by the WP Error functions?

Both. Or an error involving plugins....

For a 404, it wouldn't be hard.

- Make sure a 404 template exists in all themes.
- Make a plugin that does something like:

if ( is_404() ) {
wp_mail(xxxx);
}

You'll have to set some parameters, etc, but that would send an email to the blog's admin for 404 errors.

You'd have to find a hook in the error processing functions to grab into, and then use a plugin in a similar manner.

add_action('the_error_hook', 'my_email_function');
function my_email_function() {
the email function call and params here
}

I know of two plugins that could be used to do this.

one stores 404 logs into a table and the other one offers you the option to get them by mail so I gues you can easily modify that plugin to send mail to you and hide the admin interface from the users.

http://alexking.org/projects/wordpress
http://mattread.com/projects/wp-plugins/log-404/

There's also an error_log in the root of the WPMu install. If you don't have one, go ahead and create the file and assign it a file permission of 666.

If it were me, as a site admin, I wouldn't really want 404's from every single site. WP errors I might though.