Facade Design Pattern

facade.php

<?php

class BusinessLayer 
{   
    public function UserRegister(Request $request)
    {
        $userManager = new UserManagerFacade();
        $userManager->SaveUser($request->user);
    }
    
}

class UserManagerFacade
{
    private Validator $validator; 
    private UserModel $userModel; 
    private Logger $loggler;
    function __construct()
    {
        $this->$validator = new Validator();
        $this->$userModel = new UserModel();
        $this->$loggler = new Logger();
    } 

    public function SaveUser($user)
    {
        if(!$this->$validator->isUserDataValid($user)) throw new \Exception("Geçersiz Kullanıcı Bilgileri");
        $this->$userModel->saveUser($user);
        $this->$loggler->userProccessLogger();
        
    }
}

class Validator  
{
    function isUserDataValid($user)
    {
        return $user?true:false;
    }

}
class UserModel 
{
    function saveUser($user)
    {
        echo "User Saved";
    }
}
class Logger 
{
    function userProccessLogger()
    {
        echo "User Registiration Success";
    }
}