实例化一个回调处理程序实例。
比如,每遇到一个标记,就实例化一个元素类。
For example, when it sees a tag, it instantiates the element class.
这就告诉PHP引擎您希望实例化一个新对象。
This tells the PHP engine that you wish to instantiate a new object.
This is what's actually going to create the instance, instantiate it, create what the set of variable values are for it.
这个声明在你,创建一个实例的时候,实例化这个实例,然后给这个实例。
But there's actually hidden in there an important element, and that is, when I create an instance, I have to be able to get access to the things that characterize that instance.
也就是,当我创建了一个实例,我应该能够获得那些特性化,这个实例的东西,我的意思不是说它们是想法,或者情绪之类的。
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