classes and objects i
类和对象I
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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