PHP Interface

<?php
class A{
    protected $choise = "I love apple";
    public function display(){
    print "{$this->choise} <br />\n";
    }

}
class B extends A{
    protected $name = "Md. Touhidul Islam Touhid";
    protected $address = "Dianjpur, Bangladesh";
    protected $job = "Programmer";


    public function MyInfo(){

        print $this->name."<br />\n";
        print $this->address."<br />\n";
        print $this->job."<br />\n";

    }
}
class C extends B implements MyInterface{
}
interface MyInterface{
    public function display();
    public function MyInfo();
}
$obj = new C();
$obj->display();
?>