App\Http\Controllers\UserController::changePassword PHP Method

    public function changePassword()
    {
        // check the current password is correct
        if (!Auth::validate(['email' => Auth::user()->email, 'password' => Input::get('current_password')])) {
            return trans('texts.password_error_incorrect');
        }
        // validate the new password
        $password = Input::get('new_password');
        $confirm = Input::get('confirm_password');
        if (strlen($password) < 6 || $password != $confirm) {
            return trans('texts.password_error_invalid');
        }
        // save the new password
        $user = Auth::user();
        $user->password = bcrypt($password);
        $user->save();
        return RESULT_SUCCESS;
    }