[Solved] What is the primary purpose of using interfaces in PHP? — Ans: To define a contract that classes must follow by implementing specific methods | PHP

PHP - Interfaces and Traits

What is the primary purpose of using interfaces in PHP?

ATo store data persistently across sessions

BTo define a contract that classes must follow by implementing specific methods

CTo create instances of classes directly

DTo handle errors and exceptions automatically

Step-by-Step Solution

Solution:

Step 1: Understand interfaces
Interfaces define method signatures without implementation.
Step 2: Purpose of interfaces
They enforce that classes implement these methods, ensuring a consistent API.
Final Answer:
To define a contract that classes must follow by implementing specific methods -> Option B
Quick Check:
Interfaces specify required methods, not data or error handling. [OK]

Quick Trick: Interfaces enforce method implementation contracts. [OK]

Common Mistakes:

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What is the primary purpose of using interfaces in PHP?