PHP头文件已经发送错误 [英] php headers already sent error

问题描述

可能存在重复：

已由PHP发送的头文件

我有一个php文件，这个代码在里面：

I have a single php file, with this code in it:

<?php header("Location: somepage.php"); ?>

在php打开或关闭标记之前或之后绝对没有空格，我得到

Absolutely no spaces before or after the php opening or closing tags and I am getting the

Warning: Cannot modify header information - headers already sent by (output started at C:\ ... \test.php:1

通常当我得到这个错误时，1是问题的行号，但在这种情况下，行我没有任何额外的空格，我只有这个代码在页面上，我没有包含任何其他文件。

Usually when I get this error, the 1 is the line number of the problem, but in this case line one doesn't have any extra whitespace. I only have this code on the page and I am not including any other files.

我在Windows XP上使用xampp。任何想法正在发生什么，或者我如何能够找出真正导致问题的原因。

I'm using xampp on windows xp. Any ideas what's going on or how I can track down what's really causing the problem.

谢谢

Thanks

推荐答案

很可能你有什么被称为 BOM（字节顺序标记） a>，根据你使用的编辑器，你需要关闭添加物料清单......

Chances are that you have what's known as a BOM (Byte Order Mark) in the file. Depending on what editor you're using, you'll need to turn off adding the BOM...

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