static function update() { if (file_exists('data.txt')) { self::$instance = unserialize(file_get_contents("data.txt")); } else { self::$instance = new Cloud(); } return self::$instance; }
static function update() { if (file_exists('data.txt')) { self::$instance = unserialize(file_get_contents("data.txt")); } else { self::$instance = new Cloud(); } return self::$instance; }