PHP Designing Interfaces in PHP Using Interfaces Implementing Interfaces

Thi Kim Hong Dinh
Thi Kim Hong Dinh
11,237 Points

Set and retrieve details from interface

I can't pass this challenge. Please help... Thank you!!!

Treehouse.php
<?php
class Treehouse implements Learnable
{   
    protected $title;

     public function setTitle($title) {
       $this->setTitle;
     }

     public function setContentType($type='video') {
       $this->setContentType; 
     }

    public function setLocation($loc) {
        $this->setLocation; 
    }
      public function getTitle() {
        $this->getTitle;
    }

    public function getContentType() {
        $this->type;
    }

    public function getLocation() {
        $this->location;
    }



}