$wpdb->base_prefix gets the original prefix (ie, the ‘root’ site in a Multisite installation). It was added in Version 3.0.0, right when Multisite became a part of WordPress core. $wpdb->prefix will get the prefix for the current site in a Multisite installation. Per the documentation for the wpdb class: $prefix The assigned WordPress table prefix for … Read more
Short Answer example.com/bob/files/picture.jpg is the preferred, canonical URL for images in a WordPress Multisite installation. The two URLs with blogs.dir in the URL are essentially identical, and both leverage the filesystem structure. The path with ‘bob’ exists because you did a sub-directory install, not a subdomain install. Other paths would exist based on your other … Read more
After many hours of debugging and despair, the problem is now solved. It turned out to be a very obscure thing. The redirect is issued by the function ms_load_current_site_and_network() inside /wp-includes/ms-load.php. It was issuing the redirect because /wp-includes/ms-settings.php was not able to set a domain. The reason it was not able to set a domain … Read more
There is a plugin for that: WP XAMPP Multisite Subdomains. Unfortunately, there is no English description available. I’ll try that here. The following guide will set up a multi-site under mu.wp with subdomains. 1. Basic Installation Start with a fresh installation of WordPress and XAMPP. Create a network for subdomains. Do not create any sub … Read more
You’re right, get_current_site()->blog_id will return 1, as it refers to the network. To get the current site (blog) ID you can go like this: <?php echo get_current_blog_id(); ?> Moreover you can get the current site (blog) details like this: <?php var_dump(get_blog_details()->blog_id); ?>
So, it turns out that those three changes were all that were needed. It also turns out that if any of the serialized arrays are modified incorrectly (which is easy to do when modifying them by hand), the system will just assume you are not a network administrator. Correcting the serialized array for the site_admins … Read more
For network option pages the correct form action URL is: wp-admin/network/edit.php?action=your_option_name Then you have to register a callback: add_action( ‘network_admin_edit_your_option_name’, ‘your_save_network_options_function’ ); In that callback function inspect the $_POST data, prepare the values, then save them: update_site_option( $this->option_name, $this->option_values ); And then you have to create the redirect without further help: // redirect to settings … Read more
It’s dynamically generated by the function do_robots(), which has both an action (do_robotstxt) and a filter (robots_txt). If you create a robots.txt file in your WordPress root, it will (probably) be served up when /robots.txt is requested, otherwise processing will fall back on WordPress. Your current file looks like this: User-agent: * Disallow: Sitemap: http://mikewills.me/sitemaps/mikewills-me.xml.gz … Read more
Don’t try to convert an existing site. What you’ll want to do is set up a new site with a clean installation of WordPress. Most of the networks I’ve started are subdomains along the lines of http://network.blog.url or http://dashboard.blog.url. The first site you set up will become the dashboard site for the rest of the … Read more
Warning: This is just a test for dev installs and not production sites I was curious to see if there was a workaround, for those who want to develope multisites on their dev installs but on different ports than :80 and :443, e.g. :8080. I only found this blog post by Henri Benoit. There he … Read more