wp-multisite

Use when building or adapting a WordPress plugin for Multisite/Network — network activation (register_activation_hook with $network_wide), network admin pages (network_admin_menu), per-site vs network-wide options (get_option / get_network_option / update_network_option), looping sites with get_sites() + switch_to_blog() / restore_current_blog(), super admin capabilities (is_super_admin(), manage_network, is_network_admin()), table prefix handling ($wpdb->prefix vs $wpdb->base_prefix), blog ID awareness (get_current_blog_id), or detecting multisite context (is_multisite(), is_plugin_active_for_network()). Triggers: \"make my plugin multisite compatible\", \"network activate\", \"network admin page\", \"per-site settings\", \"switch_to_blog()\", \"restore_current_blog()\", \"super admin only feature\", \"why does my plugin break on multisite\", \"run this for every site in the network\", \"network-wide option\", \"plugin only on certain sites\", \"blog ID handling\", \"is_multisite()\", \"is_network_admin()\", \"is_plugin_active_for_network()\", \"get_network_option()\", \"wpdb base_prefix\", \"manage_network capability\", \"network options page\", \"multisite table prefix\", \"site-aware hook registration\", \"get_sites() loop\". Not for: WP-CLI multisite ops; MU-plugins auto-load behaviour (no activation hooks fire).