wp-includes/user.php:1437Updates the total count of users on the site.
$network_idint|nulloptionalnullboolfunction wp_update_user_counts( $network_id = null ) { global $wpdb; if ( ! is_multisite() && null !== $network_id ) { _doing_it_wrong( __FUNCTION__, sprintf( /* translators: %s: $network_id */ __( 'Unable to pass %s if not using multisite.' ), '<code>$network_id</code>' ), '6.0.0' ); } $query = "SELECT COUNT(ID) as c FROM $wpdb->users"; if ( is_multisite() ) { $query .= " WHERE spam = '0' AND deleted = '0'"; } $count = $wpdb->get_var( $query ); return update_network_option( $network_id, 'user_count', $count );}Introduced in 6.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/user.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.