誰可以教Related Posts Thumbnails這套件我怎麼更改排列順序？（我不想照ID排）

我想要related posts在我網站上不要照ID牌而是照日期排，而且也要顯示該文章在清單中（就是完整的該分類文章清單在每個文章頁），不知道要怎麼寫？我不是coder 🙁
相關code在這：

$order = " ORDER BY rand() LIMIT " . $posts_number;
		$random_posts = $wpdb->get_results( $query . $join . $where . $order );

		/* Get posts by their IDs */
		if ( !is_array( $random_posts ) || count( $random_posts ) < 1 ) {
			return $this->finish_process( $output, $debug . 'No posts matching relationships criteria;', $time );
		}

		$posts_in = array();
		foreach ($random_posts as $random_post)
			$posts_in[] = $random_post->ID;
		$query = "SELECT ID, post_content, post_excerpt, post_title FROM $wpdb->posts WHERE ID IN ('". implode( "', '", $posts_in ) . "')";
		$posts = $wpdb->get_results( $query );
		if ( ! ( is_array( $posts ) && count( $posts ) > 0 ) ) { // no posts
			$debug .= 'No posts found;';
			return $this->finish_process( $output, $debug, $time );
		}
		else
			$debug .= 'Found ' . count( $posts ) . ' posts;';

希望有人能指點迷津，我完全不知從何改起…