WordPress Version: 6.2
/**
* Updates the last_updated field for the current site.
*
* @since MU (3.0.0)
*/
function wpmu_update_blogs_date()
{
$site_id = get_current_blog_id();
update_blog_details($site_id, array('last_updated' => current_time('mysql', true)));
/**
* Fires after the blog details are updated.
*
* @since MU (3.0.0)
*
* @param int $blog_id Site ID.
*/
do_action('wpmu_blog_updated', $site_id);
}