get_current_network_id() WordPress Function

function get_current_network_id() {
	if ( ! is_multisite() ) {
		return 1;
	}

	$current_network = get_network();

	if ( ! isset( $current_network->id ) ) {
		return get_main_network_id();
	}

	return absint( $current_network->id );
}
Uses	Description
wp-includes/ms-network.php:get_network()	Retrieves network data given a network ID or network object.
wp-includes/functions.php:get_main_network_id()	Get the main network ID.
wp-includes/load.php:is_multisite()	If Multisite is enabled.
wp-includes/functions.php:absint()	Convert a value to non-negative integer.
Used By	Description
wp-includes/ms-blogs.php:wp_count_sites()	Count number of sites grouped by site status.
wp-includes/ms-site.php:wp_insert_site()	Inserts a new site into the database.
wp-admin/press-this.php:wp_load_press_this()
wp-includes/option.php:update_network_option()	Updates the value of a network option that was already added.
wp-includes/option.php:add_network_option()	Adds a new network option.
wp-includes/option.php:delete_network_option()	Removes a network option by name.
wp-includes/option.php:get_network_option()	Retrieves a network’s option value based on the option name.
wp-signup.php:validate_another_blog_signup()	Validates a new site sign-up for an existing user.
wp-admin/includes/ms.php:can_edit_network()	Whether or not we can edit this network from this page.
wp-admin/includes/class-wp-ms-sites-list-table.php:WP_MS_Sites_List_Table::prepare_items()	Prepares the list of sites for display.
wp-includes/functions.php:is_main_network()	Determine whether a network is the main network of the Multisite installation.
wp-includes/option.php:wp_load_core_site_options()	Loads and caches certain often requested site options if is_multisite() and a persistent cache is not being used.
wp-includes/ms-deprecated.php:wp_get_sites()	Return an array of sites for a network or networks.
wp-includes/ms-functions.php:wp_update_network_site_counts()	Updates the network-wide site count.
wp-includes/ms-functions.php:wp_is_large_network()	Determines whether or not we have a large network.
wp-includes/ms-functions.php:wpmu_activate_signup()	Activates a signup.
wp-includes/ms-functions.php:wpmu_signup_blog_notification()	Sends a confirmation request email to a user when they sign up for a new site. The new site will not become active until the confirmation link is clicked.
wp-includes/ms-deprecated.php:get_admin_users_for_domain()	Get the admin for a domain/path combination.
wp-includes/ms-functions.php:get_active_blog_for_user()	Gets one of a user’s active blogs.
wp-includes/ms-deprecated.php:get_blog_list()	Deprecated functionality to retrieve a list of all sites.
wp-includes/ms-blogs.php:get_last_updated()	Get a list of most recently updated blogs.
wp-includes/class-wp-xmlrpc-server.php:wp_xmlrpc_server::wp_getUsersBlogs()	Retrieve the blogs of the user.