Cannot modify header information - headers already sent

Hi,

What does this mean exactly?

Cannot modify header information - headers already sent

My site was working with no problems at all when i was developing it on the local server but once i uploaded it to the internet server the above error message appears when i use the function below.

header("Location: home.php");

Any help would, as always, be gratefully recieved!

Is there anything sent to the browser before the header? because thats what normaly gives that error, a echo, any white space or text outside of the <?php ?>

Quote: "Note: The HTTP status header line will always be the first sent to the client,.........."
php.net
Always FIRST after open tags .. - remember this and have no more problem with HTTP protocol level
Example
<?php
header(..................

Regards
www.take-host.com

Ok, so how should I do an automatic redirect? Also why was it working on my local machine but not when the file was uploaded to the internet?

Not sure, need to see some code to figure out exactly what is wrong...

Some example again i will quote same page:
"<?php
header("Location: http://www.example.com/"); /* Redirect browser */

/* Make sure that code below does not get executed when we redirect. */
exit;?>"
Good luck
www.take-host.com

RE your post on headers already sent---

"Ok, so how should I do an automatic redirect? Also why was it working on my local machine but not when the file was uploaded to the internet?"

im having the same problem - how did you solve your "headers already sent..." but works on local machine? Driving me nuts!!!!
David

david@mypilot.org

Ok heres how to solve the problem.
At the beginning of the page. before any HTML or any code is written type:

Code: Select all

<?php
ob_start();
?>

Now at the very bottom of the page after all the code type:

Code: Select all

<?php
ob_end_flush();
?>

You can now use headers, cookies and sessions wherever you want in your page with running into problems.

The function buffers all information between it before sending it to the browser.