Cannot modify header information – headers already sent

The problem is likely caused by a plugin (since pluggable.php is involved). Try deactivating them one at a time.

Hi

The problem here is that you have gotten some text or whitespace (spaces, newline) before the opening PHP tag or after the closing PHP tag in your theme’s functions.php file. There can’t be a single character before or after those tags.

Hi,

You can refer this case study:

[spam link moderated]

or you can just read the codex article, which incidentally, reads just the same way.

Yeah, it was a mix of everything people suggested.

I deleted all of the plugins except akismet and deleted the following from the functions.php file included in the theme I was using:

<?php // for sidebar.php if needed ?>
<?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar() ) : endif;
?>

Thanks for all of your help!

I am getting the same problem: Here is what I’ve done so far

• I’ve removed all the blank spaces from the wp-config.php file
• I’ve removed the blank spaces from the class.wp-scripts.php I also noticed that there was a ?>[closing argument] missing at the bottom of this file
• I’ve removed all the blank spaces from pluggable.php and nothing seems to work
• I also removed all the blank spaces from the wp-blog-header.php

Can someone please guide me in the right direction? this is the error I am getting: Warning: Cannot modify header information – headers already sent by (output started at /var/www/vhosts/phattkicks.com/httpdocs/wp-includes/class.wp-scripts.php:54) in /var/www/vhosts/phattkicks.com/httpdocs/wp-includes/pluggable.php on line 711
Any help would be appreciated! Thank you for your time…

The problem is likely caused by a plugin (since pluggable.php is involved). Try deactivating them one at a time.

Ok, let me give more information:
This is a fresh install. The only Plugin there is the akismet. I deleted that Plugin to see if that’s the issue but that didn’t solve anything. I already uploaded the files again and nothing seems to work.
Does anyone know how I can get an Older copy of Word-Press? one that functions correctly?

and where do you see this error, nuevolutionWD? what page?

I dont see any error on the front page of your blog, hence the q.

the only easiest way is to renew your function.php file, just download a new wordpress and replace your function.php file with yours
i had the same problem at https://decentsms.com but now it is solved

Whooami,
It’s in the Admin Side. and yes the front of the web site is OK, Whne I Log In, I see the header message (howdy Admin) and right under that I see the Message, so I don’t see the tabs.

Hi NuevolutionWD,

Just in case, you might want to check out this forum:
https://www.ads-software.com/support/topic/210013?replies=8

You may want to check to make sure your site was not hit with a malicious script, as mentioned in that forum thread. I’m in the process of cleaning up my 2.7.1 site, which was hit with the same script mentioned in the above thread. The script causes a “headers already sent” error, which was from iframe urls placed into the site header, and footer, and in my case also prevented me from logging into my WP Admin dashboard.

Check “view page source” from your site and see if there are any “iframe urls” listed above your header codes. (Just one way to look for it to begin with). I’m hoping it’s not what has happened to you, because it’s a nightmare to clean up! ??

Ok, this is the thing… It’s a fresh installation. Would it be possible that there are issues with the 2.7.1 installation?
Or can there be an issue with the package?
I’m running php5 it does install correctly just for that error that is annoying, Ican’t see nothing below the howdy Admin, but when I check the source code it shows pages, comments, and other items… can there be an issue with the footer?

ApnaySMS
I am having this problem cam I still have my origanl wp I download. Can you tell me how to replace your function.php file?

Please Kris

Im only save the wp-config.php using notepad in coded ANSI diferent them normaly utf8

and its Work’s