From 45dc26a65634cf62a41d4e021b78b7901b6dcf99 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Thu, 10 Dec 2015 17:46:23 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E8=BF=9B=20hook=E7=B1=BB=E7=9A=84exec?=
 =?UTF-8?q?=E6=96=B9=E6=B3=95?=
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---
 library/think/hook.php | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/library/think/hook.php b/library/think/hook.php
index ab389181..f28c31d8 100644
--- a/library/think/hook.php
+++ b/library/think/hook.php
@@ -111,17 +111,17 @@ class Hook
 
     /**
      * 执行某个行为
-     * @param string $name 行为名称
+     * @param string $class 行为类名称
      * @param string $tag 方法名（标签名）
      * @param Mixed $params 传人的参数
      * @return void
      */
-    public static function exec($name, $tag, &$params = null)
+    public static function exec($class, $tag = '', &$params = null)
     {
-        if ($name instanceof \Closure) {
-            return $name($params);
+        if ($class instanceof \Closure) {
+            return $class($params);
         }
-        $addon = new $name();
-        return method_exists($addon, $tag) ? $addon->$tag($params) : $addon->run($params);
+        $obj = new $class();
+        return ($tag && is_callable([$obj, $tag])) ? $obj->$tag($params) : $obj->run($params);
     }
 }