Merge branch 'zjl_commit_20200526'

resources/views/detail/detail_multi_info.php

@@ -26,7 +26,7 @@
                     <th colspan="8" style="text-align: center; background: #f9f9f9;"> 发票信息
                     <?php 
                         //<!-- 发票状态小于2（已发货）且更改权限存在 显示按钮 -->
-                        if (!isset($tags)) {
+                        if (empty($tags)) {
                             if(in_array($order_info['status'], [1, 2, 3, 4]) && $order_invoice_info['invoice_status'] < 2 && in_array('update_invoice', $userPerms)) {
                                 echo '<a href="/changeInvoice/'.$order_info['order_id'].'" class="btn btn-success btn-sm changeBtn">更改发票</a>';
                             }