Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

PHP Designing Interfaces in PHP Abstract Classes Abstract Class

Posted by Dipika Purohit
Dipika Purohit
Courses Plus Student 20,955 Points

stuck on challenge 4of4

In the Mockingbird.php file, create a "Mockingbird" class that inherits from the Bird Class and also uses the Flyable interface. Make sure you define all abstract methods

Bird.php 
<?php

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

public function eat()
{
}
public function sleep(){

}
  public abstract function communicate($type);
}
Mockingbird.php 
<?php 
class Mockingbird extends Bird implements Flyable {

  public function communicate($type) {
    }  

abstract class Flyable{
abstract protected function takeOff()  ;
     abstract protected function fly($dest) ;
     abstract protected function getValue();

}
}
Penguin.php 
<?php

// real penguin class (cannot fly)
class Penguin extends Bird {

  public function communicate($type) {
  }

}
Alexandru Palita
Alexandru Palita
14,261 Points
Alexandru Palita
Alexandru Palita
14,261 Points

This worked for me...

Bird.php

<?php

// abstract bird class

abstract class Bird 
{
  public $color, $wingspan , $habitat;

  public function eat() {
    return true;
  }
  public function sleep() {
    return true;
  }

  abstract public function communicate($type);
}

Penguin.php

<?php

// real penguin class (cannot fly)

class Penguin extends Bird
{
  public function communicate($type) {
  }
}

And Mockingbird.php ...Figured it out from the errors .... Flyable interface file is missing...

<?php

// real Mockingbird class (can fly)
class Mockingbird extends Bird implements Flyable 
{
  public function communicate($type) {
  }

  public function fly($dest){
  }
  public function takeOff(){
  }
  public function land(){
  }
}