Since we are doing an object-oriented software system, the behavior of our use case must be carried out by the classes and objects in our system.
由于我们是在设计一个面向对象的软件系统，我们的用例行为需要由我们系统中的一些对象和类来执行。
This is great news for those of us who would like to use classes and objects in non GTK + -based programs such as console-based applications and tools.
对于我们这些喜欢在基于非gtk +的程序(比如基于控制台的应用程序和工具)中使用类和对象的人而言，是个非常好的消息。
I also assume that you know the basics of working with classes and objects in PHP, as the PHP components used in this article are written in compliance with OOP principles.
还假定读者了解在php中的类与对象的相关知识，因为文中所采用的PHP组件是遵照OOP原则来编写的。
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