wp_update_network_site_counts() │ WP 3.7.0

Updates the network-wide site count.

No Hooks.

Returns

null. Nothing (null).

Usage

wp_update_network_site_counts( $network_id );
$network_id(int|null)
ID of the network.
Default: current network

Changelog

Since 3.7.0 Introduced.
Since 4.8.0 The $network_id parameter has been added.

wp_update_network_site_counts() code WP 6.9.1

wp-includes/ms-functions.php 
function wp_update_network_site_counts( $network_id = null ) {
	$network_id = (int) $network_id;
	if ( ! $network_id ) {
		$network_id = get_current_network_id();
	}

	$count = get_sites(
		array(
			'network_id'             => $network_id,
			'spam'                   => 0,
			'deleted'                => 0,
			'archived'               => 0,
			'count'                  => true,
			'update_site_meta_cache' => false,
		)
	);

	update_network_option( $network_id, 'blog_count', $count );
}