/** * Cart66 should only be loaded one time * * @since 2.0 * @static * @return Cart66 instance */ public static function instance() { if (is_null(self::$instance)) { self::$instance = new self(); } return self::$instance; }
public static function get_instance() { if (!isset(self::$instance)) { self::$instance = new Cart66_Cloud(); } return self::$instance; }