什么是PHP中的抽象类? [英] What is an abstract class in PHP?

问题描述

什么是PHP中的抽象类?

如何使用?

解决方案

抽象类是至少包含一个抽象方法的类，该方法中没有任何实际代码，仅包含名称和参数，并且标记为抽象".

这样做的目的是提供一种模板，以从中继承并强制继承类实现抽象方法.

因此，抽象类介于常规类和纯接口之间.接口也是抽象类的特殊情况，其中所有方法都是抽象的.

请参见PHP手册的本部分以获取进一步的参考. /p>

What is an abstract class in PHP?

How can it be used?

解决方案

An abstract class is a class that contains at least one abstract method, which is a method without any actual code in it, just the name and the parameters, and that has been marked as "abstract".

The purpose of this is to provide a kind of template to inherit from and to force the inheriting class to implement the abstract methods.

An abstract class thus is something between a regular class and a pure interface. Also interfaces are a special case of abstract classes where ALL methods are abstract.

See this section of the PHP manual for further reference.

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