Codeigniter - 无法修改标头信息 - 已发送的标头
问题描述：
A PHP Error was encountered
Severity: Warning
Message: Cannot modify header information - headers already sent by (output started at /home/aphotel/public_html/application/config/config.php:1)
Filename: libraries/Session.php
Line Number: 366
＃
它的奇怪部分，libraries文件夹中没有session.php文件
#
Weird part of it, there is no session.php file in libraries folder
答
我之前遇到过这个问题，它是由output_buffering关闭引起的。
I had this problem before and it was caused by output_buffering was Off.
php.ini并搜索output_buffering并使其看起来像这样
Edit your php.ini and search for output_buffering and make it looks like this
output_buffering = On