From a77f702a9f802d8424139fe8e325e87938021d4c Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Wed, 17 Aug 2016 16:34:33 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E8=BF=9BCache=E7=B1=BB=E7=9A=84tag?=
 =?UTF-8?q?=E6=96=B9=E6=B3=95=20=E6=94=AF=E6=8C=81=E8=AE=BE=E7=BD=AE?=
 =?UTF-8?q?=E6=A0=87=E7=AD=BE=E7=9A=84=E7=BC=93=E5=AD=98=E6=A0=87=E8=AF=86?=
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Content-Transfer-Encoding: 8bit

---
 library/think/Cache.php        |  5 +++--
 library/think/cache/Driver.php | 13 ++++++++++---
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/library/think/Cache.php b/library/think/Cache.php
index a958911d..21ef59e8 100644
--- a/library/think/Cache.php
+++ b/library/think/Cache.php
@@ -169,12 +169,13 @@ class Cache
      * 缓存标签
      * @access public
      * @param string $name 标签名
+     * @param string|array $keys 缓存标识
      * @return \think\cache\Driver
      */
-    public static function tag($name)
+    public static function tag($name, $keys = null)
     {
         self::init();
-        return self::$handler->tag($name);
+        return self::$handler->tag($name, $keys);
     }
 
 }
diff --git a/library/think/cache/Driver.php b/library/think/cache/Driver.php
index de4080c7..e1b4bcbd 100644
--- a/library/think/cache/Driver.php
+++ b/library/think/cache/Driver.php
@@ -84,12 +84,19 @@ abstract class Driver
      * 缓存标签
      * @access public
      * @param string $name 标签名
+     * @param string|array $keys 缓存标识
      * @return $this
      */
-    public function tag($name)
+    public function tag($name, $keys = null)
     {
-        $this->tag = $name;
-        return $this;
+        if (is_null($keys)) {
+            $this->tag = $name;
+            return $this;
+        } else {
+            $key   = 'tag_' . md5($name);
+            $value = is_array($keys) ? implode(',', $keys) : $keys;
+            $this->set($key, $value);
+        }
     }
 
     /**