public function setSandbox()
 {
     self::$url = 'https://sandbox.merchant.wish.com/api/v2';
 }
 /**
  * 功能: 初使化
  */
 public function __construct($account, $companyId)
 {
     parent::__construct($account, $companyId);
     $this->api = 'order';
     //parent::$url = 'https://merchant.wish.com/api/v1/order/multi-get?key=';
 }
 /**
  * 功能: 初使化
  */
 public function __construct($account, $companyId)
 {
     parent::__construct($account, $companyId);
     $this->api = 'product';
     //parent::$url = 'https://merchant.wish.com/api/v1/product/'.$act.'?key=';
 }