The only tricky part is that the published date of the article is turned into a long and used as an ID.

其中唯一复杂的部分是文章的发表日期被转化为一个long值，并用作一个ID。

youdao

Entries and objects will set their published date to the current date (using the PHP time function) by default. Listing 6 shows the base class for entries.

项和对象默认将它们的发布日期设置为当前时间(使用PHPtime函数)。

youdao

It also shows the author name, format (hardback, paperback), extract, synopsis, ISBN, size, published date, price and publisher.

同时也显示作者姓名，书的版式(精装书或平装书)，摘录信息，概要，书号，尺寸，出版日期，价格和出版社。

youdao

It also shows the author name, format (hardback, paperback), extract, synopsis, ISBN, size, published date, price and publisher.

同时也显示作者姓名，书的版式(精装书或平装书)，摘录信息，概要，书号，尺寸，出版日期，价格和出版社。

youdao