[Solved] Identify the error in this PHP code snippet:class Animal {} class Dog extends Animal {} $dog = new Dog(); if ($dog instanceof 'Animal') { echo 'It is an animal'; } | PHP

PHP - Inheritance and Polymorphism

Identify the error in this PHP code snippet:

class Animal {}
class Dog extends Animal {}
$dog = new Dog();
if ($dog instanceof 'Animal') {
    echo 'It is an animal';
}

AMissing semicolon after class definition

BIncorrect object creation syntax

CUsing quotes around class name in instanceof

DUsing instanceof with a variable instead of object

Step-by-Step Solution

Solution:

Step 1: Check instanceof usage
The instanceof operator expects a class name without quotes, not a string.
Step 2: Verify other parts
Classes and object creation are correct; semicolons are present.
Final Answer:
Using quotes around class name in instanceof -> Option C
Quick Check:
Class name must be unquoted in instanceof [OK]

Quick Trick: Do not put quotes around class names in instanceof [OK]

Common Mistakes:

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