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Cannot Modify Header Information


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#1 pureDesi

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Posted 01 October 2006 - 01:59 AM

Ok, I have a problem that I'm guessing has a very simple fix. But I can't seem to find it.
This is the exact contents of the file:
<?
setcookie("test", "", time()-30);
setcookie("test", $_GET['value'], time()+30);
echo $HTTP_COOKIE_VARS["test"];
?>

When I run it the first time, it's fine, but then everytime after that I get the following error message:
Warning: Cannot modify header information - headers already sent by (output started at /home2/monkey/public_html/main/test.php:3) in /home2/monkey/public_html/main/test.php on line 3
Anybody know what's wrong?

#2 schwim

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Posted 01 October 2006 - 02:18 AM

Hi there,

Are you sending any POST data along with the script when the next page loads?  I got this same error when I was trying to use a user authorization script, and the explanation I found was that once headers are sent and page data starts to get passed, you can't go back and add any more header information.

One of the solutions I found was ob_start and ob_end_flush, but I have yet to make this work successfully.

thanks,
json

#3 akitchin

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Posted 01 October 2006 - 03:51 AM

i'm locking this topic.  read the sticky topics, as they discuss header errors in detail.




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