如何解决PHP中的隐形空间问题? [英] How to fix the invisible space problem in PHP?

问题描述

结果，session_start和setcookie之类的功能无法成功运行，报告:

As a result,functions like session_start and setcookie can't run successfully,reporting:

无法修改标题信息- 标头已经由

Cannot modify header information - headers already sent by

但是目标文件是这样的:

But the target file is like this:

1 <?php
2 session_start(); 

如何解决?

基础

我发现了问题，将utf-8格式的文件上传到服务器后变成了utf-8 + BOM，因此我通过将其再次保存为utf-8暂时解决了该问题.

I've found the problem,the utf-8 formated files become utf-8+BOM after uploading to the server,so I've temporarily solved the problem by saving it as utf-8 again.

但是，还有很多其他文件存在相同的问题，我该如何批量解决该问题?

BUT,there are lots of other files with the same problem,how can I batch solve the issue?

推荐答案

闻起来像BOM表问题，因为一些编辑器没有显示出来.尝试使用Notepad ++，Emacs或任何其他显示该文件的编辑器打开文件.如果在<之前有一些奇怪的字符，那么您就是罪魁祸首.

Smells like a BOM problem as some editors don't show it. Try opening your file with Notepad++, Emacs or any other editor which show it. If you have some weird character before the <, you got the culprit.

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