Редирект на installation/index.php - Joomla 2.5: Установка и обновление

if (!file_exists(JPATH_CONFIGURATION.'/configuration.php') || (filesize(JPATH_CONFIGURATION.'/configuration.php') < 10) || file_exists(JPATH_INSTALLATION.'/index.php')) {

	if (file_exists(JPATH_INSTALLATION.'/index.php')) {
		header('Location: '.substr($_SERVER['REQUEST_URI'], 0, strpos($_SERVER['REQUEST_URI'], 'index.php')).'installation/index.php');
		exit();
	} else {
		echo 'No configuration file found and no installation code available. Exiting...';
		exit();
	}
}

|| (filesize(JPATH_CONFIGURATION . '/configuration.php') < 10)