Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

PHP Designing Interfaces in PHP Abstract Classes Abstract Class

Challenge Task 2 of 4 abstaract class quiz

Challenge Task 2 of 4

Add the following PUBLIC parameters: color, wingspan, habitat Add the following PUBLIC methods: "eat", "sleep" Add a PUBLIC abstract method named "communicate" that accepts a single parameter for the type of communication.


// abstract bird class
abstract class Bird
  public $color,$wingspan,$habitat;

public function eat()
public function sleep(){

  abstract function communicate()

// real Mockingbird class (can fly)

// real penguin class (cannot fly)

1 Answer

Daniel Marin
Daniel Marin
8,021 Points

On the 3rd point it says to make the method public, abstract and accept one param.
So you only need to change your communicate method:

public abstract function communicate($type);

thanx :)