class User{

}

class Iuser extends User{
    private $name;
    function  __construct($name){
        $this->name = $name;
    }
    function getName(){
        return strtoupper($this->name);
    }
}

class Wuser extends User{
    private $name;
    function  __construct($name){
        $this->name = $name;
    }
    function getName(){
        return strtolower($this->name);
    }
}

class Name{
  public $u;
  function  __construct(User $u){
      $this->u = $u;
  }

  function getName(){
      $name  = $this->u->getName();
      return "Hi My Name is ".$name;
  }
}

$name = "Deval Patel";
$iu = new Iuser($name);
$wu = new Wuser($name);
$user = new Name($wu);
echo $user->getName();

interface User{
    public function getName();
}

class Iuser implements User{
    private $name;
    function  __construct($name){
        $this->name = $name;
    }
    function getName(){
        return strtoupper($this->name);
    }
}

class Wuser implements User{
    private $name;
    function  __construct($name){
        $this->name = $name;
    }
    function getName(){
        return strtolower($this->name);
    }
}

class Name{
  public $u;
  function  __construct(User $u){
      $this->u = $u;
  }

  function getName(){
      $name  = $this->u->getName();
      return "Hi My Name is ".$name;
  }
}

$name = "Deval Patel";
$iu = new Iuser($name);
$wu = new Wuser($name);
$user = new Name($iu);
echo $user->getName();