function __construct()
{
echo "In the child's constructor\n<br>";
parent::__construct();
// Inherited
echo "Inherited user name? " . $this->userId, "\n<br>";
// Not inherited
echo "Inherited password? " . $this->password, "\n<br>";
$this->model = 'MacBook Pro';
$this->weight = '3 lbs.';
}