class User{
 public $email;
 private $password = '1234'; //assigned here for simplicity
                             //same happens when assign from
                             //inside a class
}

require './lib/User.php';
$john = new User();
$john->email = 'john@email'; //$email is public

var_dump($john->password);   //$password is private

Fatal error: Uncaught Error: Cannot access private property  User::$password in /home/pl/work/php/index.php:20 Stack trace: #0 {main} thrown in /home/work/php/index.php on line 5

var_dump($john);

object(User)#1 (2) { ["email"]=> string(10) "john@email" ["password":"User":private]=> string(4) "1234" }

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