Last semester I took an archaeology class and we spent a lot of time studying ways to date things.

上学期我上了一门考古学的课，在这门课上我们花了很多时间来研究确定物件日期的方法。

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You will first create a new project and a class that will implement a simple service that returns the system date and time of the server on which the service is running.

您首先将创建一个新的项目和一个类，这个类将实现一个简单的服务：返回服务运行所在服务器的系统日期和时间。

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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PHP time函数)。

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