From 2fb6ce8021d707464617817b3e86613606f0f4ce Mon Sep 17 00:00:00 2001
From: zzpuser <zzpuser@163.com>
Date: Wed, 3 Aug 2016 19:36:34 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=AD=A3=E4=BA=86=E5=BB=B6=E8=BF=9F?=
 =?UTF-8?q?=E9=80=92=E5=87=8F=E6=97=B6=E5=AE=9E=E9=99=85=E4=B8=BA=E9=80=92?=
 =?UTF-8?q?=E5=A2=9E=E7=9A=84=E9=94=99=E8=AF=AF=E3=80=82?=
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由于在缓存中存放的递减值为负值，所以这里在拿出这个缓存值(缓存值本身为负值)后运算符应该为+，否则的话运算结果是错误的。
---
 library/think/db/Query.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/think/db/Query.php b/library/think/db/Query.php
index 33d2d1f6..049afea4 100644
--- a/library/think/db/Query.php
+++ b/library/think/db/Query.php
@@ -596,7 +596,7 @@ class Query
                 return true; // 等待下次写入
             }
         }
-        return $this->setField($field, ['exp', $field . '-' . $step]);
+        return $this->setField($field, ['exp', $field . '+' . $step]);
     }
 
     /**