PHP OOPLesson 50Free preview

PHP Abstract Classes

This lesson is part of PHP · All levels

Summary

A class abstract is a class that cannot be directly instantiated and usually contains an abstract method without a body. The class abstract serves as a framework that must be represented by a concrete child class. If the child doesn't fill out the entire abstract method, PHP will stop the script with a fatal error.

Key points

Class abstract is declared with the keyword abstract and cannot be called new.
Abstract methods have no body and must be implemented by the child.
A class can only inherit one parent class, including the abstract one.
Class abstract may contain standard methods that are already in place and used together by the child.

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