From 46a0af7723a13b83cf016db90d95e1f43c17d535 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Wed, 17 Aug 2016 16:50:44 +0800
Subject: [PATCH] =?UTF-8?q?Cache=E7=B1=BB=E7=9A=84tag=E6=96=B9=E6=B3=95?=
 =?UTF-8?q?=E6=94=AF=E6=8C=81=E8=BF=BD=E5=8A=A0=E7=BC=93=E5=AD=98=E6=A0=87?=
 =?UTF-8?q?=E8=AF=86?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 library/think/cache/Driver.php | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/library/think/cache/Driver.php b/library/think/cache/Driver.php
index e1b4bcbd..84ce7eaf 100644
--- a/library/think/cache/Driver.php
+++ b/library/think/cache/Driver.php
@@ -93,9 +93,12 @@ abstract class Driver
             $this->tag = $name;
             return $this;
         } else {
-            $key   = 'tag_' . md5($name);
-            $value = is_array($keys) ? implode(',', $keys) : $keys;
-            $this->set($key, $value);
+            $key = 'tag_' . md5($name);
+            if (is_string($keys)) {
+                $keys = explode(',', $keys);
+            }
+            $value = array_unique(array_merge($this->getTagItem($name), $keys));
+            $this->set($key, implode(',', $value));
         }
     }