Magento Debug HEADERS ALREADY SENT错误 [英] Magento Debug HEADERS ALREADY SENT error

问题描述

我在我的system.log文件中收到以下错误：

I am receiving the following error in my system.log file:

 2011-01-12T14:16:52+00:00 DEBUG (7): HEADERS ALREADY SENT: 
 [0] C:\xampp\htdocs\www.mysite.com\app\code\core\Mage\Core\Controller\Response\Http.php:44
 [1] C:\xampp\htdocs\www.mysite.com\lib\Zend\Controller\Response\Abstract.php:727
 [2] C:\xampp\htdocs\www.mysite.com\app\code\core\Mage\Core\Controller\Response\Http.php:75
 [3] C:\xampp\htdocs\www.mysite.com\app\code\core\Mage\Core\Controller\Varien\Front.php:188
 [4] C:\xampp\htdocs\www.mysite.com\app\code\core\Mage\Core\Model\App.php:304
 [5] C:\xampp\htdocs\www.mysite.com\app\Mage.php:596
 [6] C:\xampp\htdocs\www.mysite.com\index.php:81

我知道已经发送的头文件是什么意思，但是我没有想要什么文件导致这个，跟踪并不真的给我任何信息。

I know what "headers already sent" means but I have no idea what file is causing this and the trace doesn't really give me any information.

有没有办法找出违规文件？

Is there a way of finding out the offending file?

谢谢！

推荐答案

这是很难的方法。

查找正在进行日志记录的文件中的位置

Find the location in the file that's doing the logging

C:\xampp\htdocs\www.mysite.com\app\code\core\Mage\Core\Controller\Response\Http.php 
Mage::log('HEADERS ALREADY SENT: '.mageDebugBacktrace(true, true, true));

添加日志记录以获取包含/必需的每个文件的副本到目前为止

Add logging to get a copy of every file included/required so far

Mage::log(print_r(get_included_files(),true));

如果您记得将文件恢复为预先混乱，您可以将此日志直接添加到核心文件有条件，或者您可以在

You can add this logging directly to the core file if you remember to restore the file to it's pre messed with condition, or you can add a temporary copy at

app/code/local/Mage/Core/Controller/Response/Http.php

<

as long as you remember to remove it when you're done (or just use git).

查看通常的空白嫌疑犯的这个文件列表，然后检查它们是否有可能产生输出的任何函数（ echo ， print ， readfile ，可能更多）

Check this list of files for the usual white-space suspects, and then check them for any functions that might produce output (echo, print, readfile, there's probably more)

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