This is totally a use at your own risk sort of thing. I really have no plans to do anything with it, and no, you cannot sort by ID due to limitations in how the columns work in WordPress.
Installation Instructions
Make a file called show-site-ids.php
, put this code in it, and upload to your mu-plugins
folder.
<?php /* Plugin Name: Show Site ID Plugin URI: https://halfelf.org/hacks/site-id-columns-multisite/ Description: Show Site ID in Sites Column for Multisite Version: 1.0 Author: Mika 'Ipstenu' Epstein Author URI: http://ipstenu.org/ This plugin 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 plugin 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. */ function siteid_columns($column, $blog_id) { global $wpdb; if ( $column == 'site_id' ) { echo $blog_id; } return $value; } // Add in a column header function site_id($columns) { $columns['site_id'] = __('ID', 'site_id'); return $columns; } add_filter( 'wpmu_blogs_columns', 'site_id' ); add_action('manage_sites_custom_column', 'siteid_columns', 10, 3); add_action('manage_blogs_custom_column', 'siteid_columns', 10, 3); ?>