当你建立一个PHP脚本的时候，很有可能会遇到与日期和时间相关的问题，比如说当你要建立一个内容管理系统或者一个跟踪事件。

Whenever you create a PHP script, there's a big chance it'll involve handling dates and times, when for example you need to create a content management system or an event tracker.

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这是一个客户机应用程序，它通过建立与日期-时间服务器的连接，从一个指定的主系统中得到日期和时间，并报告结果。

This a client application, and it is through the establishment of a date-time server connectivity, from a designated the main system, which is the date and time, and report the results.

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