Which of the following is the correct syntax to check if $obj is an instance of class Car?

easy📝 Syntax Q12 of 15

PHP - Inheritance and Polymorphism

Which of the following is the correct syntax to check if $obj is an instance of class Car?

Aif ($obj instance Car) {}

Bif ($obj is Car) {}

Cif (instanceof $obj Car) {}

Dif ($obj instanceof Car) {}

Step-by-Step Solution

Solution:

Step 1: Recall correct instanceof syntax
The correct syntax is: variable instanceof ClassName, without extra keywords or rearrangement.
Step 2: Check each option
if ($obj instanceof Car) {} matches the correct syntax exactly. Others have wrong keywords or order.
Final Answer:
if ($obj instanceof Car) {} -> Option D
Quick Check:
Correct instanceof syntax [OK]

Quick Trick: Syntax is always: variable instanceof ClassName [OK]

Common Mistakes:

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