From 627fb9b529b261afb819de3c343446c77ce03006 Mon Sep 17 00:00:00 2001
From: Haotong Lin <lofanmi@gmail.com>
Date: Thu, 17 Dec 2015 12:13:24 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8Dheader=E5=B7=B2=E5=8F=91?=
 =?UTF-8?q?=E9=80=81=E4=BB=8D=E8=B0=83=E7=94=A8header=E5=87=BD=E6=95=B0?=
 =?UTF-8?q?=E7=9A=84notice?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 library/think/response.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/think/response.php b/library/think/response.php
index 4b209778..de569876 100644
--- a/library/think/response.php
+++ b/library/think/response.php
@@ -33,7 +33,7 @@ class Response
             'text'   => 'text/plain',
         ];
         $type = strtolower($type);
-        if (isset($headers[$type])) {
+        if (!headers_sent() && isset($headers[$type])) {
             header('Content-Type:' . $headers[$type] . '; charset=utf-8');
         }