function bbp_get_forum_last_active_time( $forum_id = 0 ) {

		// Verify forum and get last active meta
		$forum_id    = bbp_get_forum_id( $forum_id );
		$last_active = get_post_meta( $forum_id, '_bbp_last_active_time', true );

		if ( empty( $last_active ) ) {
			$reply_id = bbp_get_forum_last_reply_id( $forum_id );
			if ( ! empty( $reply_id ) ) {
				$last_active = get_post_field( 'post_date', $reply_id );
			} else {
				$topic_id = bbp_get_forum_last_topic_id( $forum_id );
				if ( ! empty( $topic_id ) ) {
					$last_active = bbp_get_topic_last_active_time( $topic_id );
				}
			}
		}

		$active_time = ! empty( $last_active ) ? bbp_get_time_since( bbp_convert_date( $last_active ) ) : '';

		// Filter & return
		return apply_filters( 'bbp_get_forum_last_active', $active_time, $forum_id );
	}