validate([ $username => $user->{$username}, 'password' => $password, ]) : $this->confirmPasswordUsingCustomCallback($user, $password); } /** * Confirm the user's password using a custom callback. * * @param mixed $user * @param string|null $password * @return bool */ protected function confirmPasswordUsingCustomCallback($user, ?string $password = null) { return call_user_func( Fortify::$confirmPasswordsUsingCallback, $user, $password ); } }