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Which one of the following keyword is used to inherit our subclass into a superclass?

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Which one of the following keyword is used to inherit our subclass into a superclass?

(a) extends

(b) implements

(c) inherit

(d) include

I got this question in semester exam.

This question is from Basics of Object-Oriented PHP- 2 topic in section Object-Oriented PHP of PHP

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The correct option is (a) extends

Explanation: When we extend a class then the subclass will inherit all the public and protected methods from the parent class.

The keyword implements are used with interfaces. With inheritance, we use the keyword extends.

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