You want to design a system where different payment methods (like PayPal, CreditCard) must implement a 'pay' method. How does using an interface help in this scenario?

hard📝 Application Q8 of 15

PHP - Interfaces and Traits

AIt automatically processes payments without class code

BIt allows storing payment data directly in the interface

CIt forces all payment classes to implement the 'pay' method, ensuring consistency

DIt lets classes inherit payment logic without writing methods

Step-by-Step Solution

Solution:

Step 1: Understand the need for consistent method
All payment classes must have a 'pay' method to process payments uniformly.
Step 2: Role of interface
Interface defines 'pay' method signature, forcing classes to implement it.
Final Answer:
It forces all payment classes to implement the 'pay' method, ensuring consistency -> Option C
Quick Check:
Interface enforces method implementation [OK]

Quick Trick: Interfaces enforce required methods across classes [OK]

Common Mistakes:

Thinking interfaces store data
Assuming interfaces run code automatically
Believing inheritance replaces interfaces

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You want to design a system where different payment methods (like PayPal, CreditCard) must implement a 'pay' method. How does using an interface help in this scenario?

Step 1: Understand the need for consistent method

Step 2: Role of interface

Final Answer:

Quick Check:

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