diff --git a/third_party/phpcommon b/third_party/phpcommon
index 914355e..5ea3bbc 160000
--- a/third_party/phpcommon
+++ b/third_party/phpcommon
@@ -1 +1 @@
-Subproject commit 914355e0f3d6ca491b299489adf475f93d211389
+Subproject commit 5ea3bbc8db78d38dfc32b2dc1e4f35d368f1154c
diff --git a/webapp/controller/SkinController.class.php b/webapp/controller/SkinController.class.php
index c87ea05..7b2d0d4 100644
--- a/webapp/controller/SkinController.class.php
+++ b/webapp/controller/SkinController.class.php
@@ -222,7 +222,6 @@ class SkinController{
         }
         $conn = $this->getMysql($account_id);
         $skin_id = $_REQUEST['skin_id'];
-        $coin_num = $_REQUEST['coin_num'];
         if(!$conn){
             phpcommon\sendError(ERR_USER_BASE + 1,'没有这个玩家');
             return;