PHP OOP login

<?php
include 'framework/framework.php';


$framework = new Framework();


// example:
$email = 'test';


try {
    if ($framework->account->login($email, 'test') == false) {
        throw new Exception($framework->account->error);
    } else {
        // $framework->session->addSession($email);


        // header('/game.php');
    }
} catch (Exception $e) {
    echo $e->getMessage();
}
?>

<?php
function __autoload($name) {
    $file = 'framework/classes/' . $name . '.class.php';


    try {
        if (!file_exists($file)) {
            throw new Exception('Class "' . $name . '" bestaat niet.');
        } else {
            include $file;
        }
    } catch (Exception $e) {
        echo $e->getMessage();
    }
}


//  class Framework extends Database?
class Framework {
    public $account, $database, $session;


    public function __construct() {
        $this->account = new Account();
        $this->database = new Database();
        $this->session = new Session();
    }
}
?>

<?php
class Account {
    public $error;


    public function __construct() {
        // check if the session "member" exists
        //if ($this->session->member()) {
        // update online time, the user should be online
        // }
    }


    public function login($email, $password, $time = null) {
        try {
            if (empty($email) || empty($password)) {
                throw new Exception('Leeg');
            }
            elseif (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
                throw new Exception('Leeg');
            }
            elseif (count($password) < 6) {
                throw new Exception('Leeg');
            } else {
                $query = $this->database->query('SELECT `email`, `password` FROM `accounts` WHERE `email` = "' . $email . '"');


                if ($query->num_rows == 0) {
                    throw new Exception('Bestaat niet.');
                }
                else {
                    $res = $query->fetch_assoc();


                    if ($password != $res['password']) {
                        throw new Exception('Wachtwoord komt niet overeen.');
                    }
                }
            }


            // always return false?
            return false;
        } catch (Exception $e) {
            $this->error = $e->getMessage();
        }
    }
}