From 27cfb7d38be64f8e92d6c694dbb840bbca012653 Mon Sep 17 00:00:00 2001
From: wangyidong <yidong@cnezsoft.com>
Date: Wed, 12 Aug 2015 14:51:04 +0800
Subject: [PATCH]  * fix a bug.

---
 module/report/model.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/module/report/model.php b/module/report/model.php
index 4722ca7120..5e47c2a23e 100644
--- a/module/report/model.php
+++ b/module/report/model.php
@@ -38,7 +38,7 @@ class reportModel extends model
     {
         $data = '[';
         $now  = date('Y-m-d');
-        $preValue = '';
+        $preValue = 0;
         $setsDate = array_keys($sets);
         foreach($dateList as $i => $date)
         {