Another cannot modify header information error

Resolved cw6365
(@cw6365)

14 years, 5 months ago

Another post on this subject, i’ve looked for white space in the main files but all seems to be ok. I have one error when adding a shortcode in the functions file, but i’ve never had the error in the header before and we’re months into coding the site.

Cannot modify header information – headers already sent by (output started at /var/www/vhosts/clienttestdomain.co.uk/httpdocs/wp-content/themes/kino/header.php:16) in /var/www/vhosts/clienttestdomain.co.uk/httpdocs/wp-includes/pluggable.php on line 754

it was when i added a function if(wp_update_user(array('ID' => $currentUser->ID, 'user_pass' => $newpassword)))

in this function, if i swap this out for a return statement eg $output .= “hello world”; it is fine?

[Code moderated as per the Forum Rules. Please use the pastebin]

The second error is in an admin plugin, this didn’t happen on my local server

Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/clienttestdomain.co.uk/httpdocs/wp-content/plugins/film_db/filmdb.php:81) in /var/www/vhosts/clienttestdomain.co.uk/httpdocs/wp-includes/pluggable.php on line 934

I’ve checked the code and it still all works fine just shows this error, here is the method of the object that contains the code with line 81

[Code moderated as per the Forum Rules. Please use the pastebin]

I don’t know where to start, what does this error even mean, what headers sent? Any help would be gladely received, i’m a broken man!!!

Viewing 8 replies - 1 through 8 (of 8 total)

Thread Starter cw6365
(@cw6365)

14 years, 5 months ago

ahh i’ve sorted the second one, it is the redirect, i forgot about adding it. Just the first one please

esmi
(@esmi)

14 years, 5 months ago

See Solving “headers already sent” warnings.

Thread Starter cw6365
(@cw6365)

14 years, 5 months ago

first port of call my friend along with 20+ posts on the forum but it never seems to work
Thread Starter cw6365
(@cw6365)

14 years, 5 months ago
Yaayyy, i’ve got the solution, havent got a clue what it does or its side effects but it has solved both the problems, add the following to functions.php
```
add_action('init', 'do_output_buffer');

	function do_output_buffer() {
        ob_start();
	}
```
found over at stack overflow
esmi
(@esmi)

14 years, 5 months ago

Does nobody ever read error messages these days?

(output started at /var/www/vhosts/clienttestdomain.co.uk/httpdocs/wp-content/plugins/film_db/filmdb.php:81)

Now guess which plugin needs to be deactiveated/deleted?

Thread Starter cw6365
(@cw6365)

14 years, 5 months ago

it’s a custom plugin that runs half the system, what good is deleting/deactivating going to do? dont comment if your no use

esmi
(@esmi)

14 years, 5 months ago

Your custom plugin is the one generating the errors. You asked for the cause. That’s it.

Thread Starter cw6365
(@cw6365)

14 years, 5 months ago

what by deleting the plugin, very helpful!

Viewing 8 replies - 1 through 8 (of 8 total)

The topic ‘Another cannot modify header information error’ is closed to new replies.

Another cannot modify header information error

Tags

Topics

Topics with no replies

Non-support topics

Resolved topics

Unresolved topics

All topics