wp_schedule_update_user_counts() WordPress Function

function wp_schedule_update_user_counts() {
	if ( ! is_main_site() ) {
		return;
	}

	if ( ! wp_next_scheduled( 'wp_update_user_counts' ) && ! wp_installing() ) {
		wp_schedule_event( time(), 'twicedaily', 'wp_update_user_counts' );
	}
}
Uses	Description
wp-includes/load.php:wp_installing()	Check or set whether WordPress is in “installation” mode.
wp-includes/cron.php:wp_next_scheduled()	Retrieve the next timestamp for an event.
wp-includes/cron.php:wp_schedule_event()	Schedules a recurring event.
wp-includes/functions.php:is_main_site()	Determine whether a site is the main site of the current network.