Magento 调试头已发送错误 [英] Magento Debug HEADERS ALREADY SENT error

问题描述

我在 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:xampphtdocswww.mysite.comappcodecoreMageCoreControllerResponseHttp.php:44
 [1] C:xampphtdocswww.mysite.comlibendControllerResponseAbstract.php:727
 [2] C:xampphtdocswww.mysite.comappcodecoreMageCoreControllerResponseHttp.php:75
 [3] C:xampphtdocswww.mysite.comappcodecoreMageCoreControllerVarienFront.php:188
 [4] C:xampphtdocswww.mysite.comappcodecoreMageCoreModelApp.php:304
 [5] C:xampphtdocswww.mysite.comappMage.php:596
 [6] C:xampphtdocswww.mysite.comindex.php:81

我知道标头已经发送"是什么意思，但我不知道是什么文件导致了这种情况，而且跟踪并没有真正给我任何信息.

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

这是困难的方法.

在进行日志记录的文件中找到位置

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

C:xampphtdocswww.mysite.comappcodecoreMageCoreControllerResponseHttp.php 
Mage::log('HEADERS ALREADY SENT: '.mageDebugBacktrace(true, true, true));

添加日志以获取迄今为止包含/需要的每个文件的副本

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到预先弄乱的状态，您可以将此日志记录直接添加到核心文件中，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

只要你记得在完成后删除它(或者只是使用 git).

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

检查这个文件列表中是否有常见的空白可疑，然后检查它们是否有任何可能产生输出的函数(echo、print、readfile，可能还有更多)

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)

这篇关于Magento 调试头已发送错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！