Hello, I working on my web-page (first time) using Apache, MySql, and Phpadmin, Phpnuke.

when i try to view my web-page from another PC i get the following errors on the first page.

Warning: Cannot add header information - headers already sent by (output started at /var/www/html/header.php:32) in /var/www/html/includes/sessions.php on line 249

Warning: Cannot add header information - headers already sent by (output started at /var/www/html/header.php:32) in /var/www/html/includes/sessions.php on line 250
PHP-Nuke Powered Site: Forums



Warning: Cannot add header information - headers already sent by (output started at /var/www/html/header.php:32) in /var/www/html/includes/page_header.php on line 525

Warning: Cannot add header information - headers already sent by (output started at /var/www/html/header.php:32) in /var/www/html/includes/page_header.php on line 531

Warning: Cannot add header information - headers already sent by (output started at /var/www/html/header.php:32) in /var/www/html/includes/page_header.php on line 532


can anyone help me, not sure what to do, or why i'm getting this.

Thank-you PPaul

I can tell you why you get this error, but probably not how to resolve it.
The reason for this error is as it states that header can't be sent because some text has already been sent to the client. This usually happens when you try to set cookies after having sent text to the client.
Cookies are sent using headers and need to be the very first thing sent to the client. If any character are sent, even an empty line you would get this error if you try to set cookies.

This means that you can't have an empty line at the top of your php script pages (above the <?php tag) as this would send the header and an empty line to the client.

easiest way to fix it is put at the TOP of the php file (first line). check output buffering for info on this.

ob_end_flush() gets called automatically when the script ends.

IN THIS CASE: i guess u've just installed php nuke and are running it, it's not actually ur script. so check if the server has enabled output buffering. put <?php phpinfo(); ?> in a file and view it in browser. i think it's been disabled. if it's ur own webserver, check apache config to change this. may have to restart apache. if server can buffer output, check php.ini.