WordPress at a glance
function is not described

wp_update_network_user_counts() WP 3.7.0

Update the network-wide user count.

  • Global. wpdb. $wpdb WordPress database abstraction object.
  • Since 4.8.0 The $network_id parameter has been added.

No Hooks.

Return

Nothing (null).

Usage

wp_update_network_user_counts( $network_id );
$network_id(int/null)
ID of the network.
Default: current network

Code of wp update network user counts: wp-includes/ms-functions.php VER 5.0.3

<?php
function wp_update_network_user_counts( $network_id = null ) {
	global $wpdb;

	$count = $wpdb->get_var( "SELECT COUNT(ID) as c FROM $wpdb->users WHERE spam = '0' AND deleted = '0'" );
	update_network_option( $network_id, 'user_count', $count );
}