Source Reference:

• Component: BuddyPress :: bp-core

  File: /bp-core/bp-core-functions.php :: Trac Source Line: 469

   * @package BuddyPress Core
   * @uses get_blog_option() WordPress function to fetch blog meta.
   * @return $domain The domain URL for the blog.
   */
  function bp_core_get_root_domain() {
  	global $wpdb;
  
  	$domain = get_home_url( bp_get_root_blog_id() );
  
  	return apply_filters( 'bp_core_get_root_domain', $domain );
  }
  
  /**
   * Get the current GMT time to save into the DB
   *
   * @package BuddyPress Core
   * @since 1.2.6
   */
  function bp_core_current_time( $gmt = true ) {
  	// Get current time in MYSQL format