[Solved] What does the instanceof operator check in PHP? — Ans: If an object is an instance of a specific class or its subclass | PHP

PHP - Inheritance and Polymorphism

What does the instanceof operator check in PHP?

AIf an object is an instance of a specific class or its subclass

BIf a variable is equal to a class name

CIf a class exists in the current namespace

DIf a function belongs to a class

Step-by-Step Solution

Solution:

Step 1: Understand the purpose of instanceof
The operator checks the relationship between an object and a class.
Step 2: Identify what it returns
It returns true if the object is an instance of the class or any subclass.
Final Answer:
It checks if an object is an instance of a specific class or its subclass -> Option A
Quick Check:
instanceof checks object-class relation = C [OK]

Quick Trick: instanceof checks object type, not variable value [OK]

Common Mistakes:

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What does the instanceof operator check in PHP?