我们可以在php中扩展多个类吗？ [重复]

Question

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• Can I extend a class using more than 1 class in PHP? 19 answers

I have tried to extend the two class with the same instance.it's not working..is there any way to do it..?

class Watermark extends PDF_Rotate, MyPDF{
//Your Code
}

</div>

Answer 1

You can extend only one parent in your class. From PHP Doc:

A class can inherit the methods and properties of another class by using the keyword extends in the class declaration. It is not possible to extend multiple classes; a class can only inherit from one base class.

But you can use for example many interfaces or traits in one class definition. From PHP Doc:

Classes may implement more than one interface if desired by separating each interface with a comma.