[Solved] How do you correctly declare an abstract method named calculate in a PHP abstract class? — Ans: abstract protected function calculate(); | PHP

PHP - Inheritance and Polymorphism

How do you correctly declare an abstract method named calculate in a PHP abstract class?

Aabstract function calculate() {}

Bfunction abstract calculate();

Cprotected function abstract calculate() {}

Dabstract protected function calculate();

Step-by-Step Solution

Solution:

Step 1: Understand abstract method syntax
In PHP, abstract methods must be declared with the keyword abstract and cannot have a body.
Step 2: Check method declaration
The correct syntax is: abstract [visibility] function methodName(); without braces.
Final Answer:
abstract protected function calculate(); -> Option D
Quick Check:
Abstract methods have no body and use the abstract keyword [OK]

Quick Trick: Abstract methods have no body and use 'abstract' keyword [OK]

Common Mistakes:

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How do you correctly declare an abstract method named calculate in a PHP abstract class?