更改订单编码量

@@ -192,7 +192,7 @@ class MemberSalesController extends HomeBaseController
 
     // 生成订单确认码存入session，并判断是否属于已生效订单
     private function create_order_sn() {
-        $order_sn = $this->generate_code(8);
+        $order_sn = $this->generate_code(10);
         if(Cache::get('number')) {
             if(in_array($order_sn,Cache::get('number'))) {
                 $this->create_order_sn();