Warning: Cannot modify header information - headers already sent by ... etc.

Hello!
Just installed, and am updating the way the miniBB looks for our branding, and I'm getting the following error message anytime a post to the forum is made:

Warning: Cannot modify header information - headers already sent by (output started at /home/engenic/public_html/devnet/skins/default.php:1) in /home/engenic/public_html/devnet/index.php on line 263

Can someone help? I'd really appreciate it!

Thanks in advance!
Tanya

I fixed it... somehow, I got a body tag in the "default.php". Once removed, all works great. :)

Whenever I post anything, a topic or reply, I keep getting this message:

Warning: Cannot add header information - headers already sent by (output started at /home/gomez/public_html/minibb/setup_options.php:84) in /home/gomez/public_html/minibb/index.php on line 114

The post gets saved, but the message above is all I see after I press the "Post a Topic" button.

Why is that and how can I fix it?

I got it to work by reuploading the config file, which is wierd because it had worked earlier and had not been changed.

So... nevermind, but thanks.

There might be an error in config - for example, if you leave empty spaces after ?> or before <?

Hi ive been running minibb for a while now and everything has been working fantyastically well.

But now i keep getting the folling errors


Warning: Cannot modify header information - headers already sent by (output started at /home/wandptrainuk/public_html/forums/index.php:1) in /home/wandptrainuk/public_html/forums/bb_cookie.php on line 80

Warning: Cannot modify header information - headers already sent by (output started at /home/wandptrainuk/public_html/forums/index.php:1) in /home/wandptrainuk/public_html/forums/bb_cookie.php on line 70

Warning: Cannot modify header information - headers already sent by (output started at /home/wandptrainuk/public_html/forums/index.php:1) in /home/wandptrainuk/public_html/forums/bb_func_login.php on line 52


this happens when i log in

can anyone help

Thanks

Ben

remove any space you have at the top of index.php or text that should not be there.

It should start <?php no spaces no lines etc make sure <?php

tahnks very much!

there was a space before <?php

great support, great board!!!

I have uploaded the 2.0 cht.php file into the server.
and I modified it to utf-8 (it was big5)

However, everytime when I was trying to post, it keep giving me this message.

Warning: Cannot modify header information - headers already sent by (output started at /home/lang/cht.php:1) in /home/index.php on line 201

If I set it back to big5 chinese or english, that is totally fine...

Iam sure there is no space in front of <?

What's the problem? Could anyone kindly tell me?

Thanks!

So, there is a space, you only don't see it. If you have used Notepad or some another UTF-8 editor, they leave 3 bytes for UTF-8 signature at the very top of each UTF-8 file. For removing these bytes, you need plain text editor like Metapad, for example. Or try Notepad 2.

This is how it looks in Metapad:



You may notice 3 suspicious bytes in front of PHP tag. This is the UTF8-signature.

This is what you should have in Notepad2:

OH MY GOD...
It works....

Cos i was using EMEditor....I think that's why...
Thank you so MUCH!!! It's extremely helpful!!!

I had a Second <?PHP Tag in one of my files, causing no end of problems!

Thanks
This Really Helped! :D

Cleaning up extra spaces worked for me. Thank you very much!

Matt Anderson

cleaning up the extra spaces is honestly something i would never have thought of. thanks so much for this tip. brilliant.

I get several Header errors on my forum.
After creating a poll, after deleting a poll etc.
Also if you delete forum posts.

Here is the output after deleting a poll:

Warning: Cannot modify header information - headers already sent by (output started at /hsphere/local/home/khitai/khitai.com/includes/header.php:8) in /hsphere/local/home/khitai/khitai.com/forums/hack_poll.php on line 141

I'm sure there are no empty spaces before the <?php tag.

Any help would be dearly appreciated as some of my users are annoyed by this.