if (!$usersManager->usersExists($nickname)) {
        if (!isset($_POST['rememberMe']) || empty($_POST['rememberMe'])) {
            $rememberMe = 'false';
        } else {
            $rememberMe = $_POST['rememberMe'];
        }
        if ($rememberMe == 'true') {
            $password = password_hash($nickname, PASSWORD_DEFAULT);
            $rememberMe = $password;
            $data['password'] = $password;
        }
        $_SESSION['nickname'] = $nickname;
        $usersManager->addUsers($nickname, $rememberMe);
        $data['success'] = true;
    } else {
        if (isset($_POST['password']) && !empty($_POST['password'])) {
            if ($usersManager->verifyPassword($nickname, $_POST['password'])) {
                $data['success'] = true;
                $data['password'] = $_POST['password'];
                $_SESSION['nickname'] = $nickname;
            } else {
                $data['success'] = false;
            }
        } else {
            $data['success'] = false;
            $data['errors'] = $nickname . ' already use';
        }
    }
}
// return all our data to an AJAX call
echo json_encode($data);