Error:Cannot modify header information - headers already sent

[mukeshrasm]

Hi
I am working on gd library with PHP to create graphs which is displaying correctly. But I want to display some information about this graph as text which will not be part of this graph means image or I want to print this graph in a table. but while doing this I got this error

Cannot modify header information- header already sent.

So how can I do this. If code is needed I will provide.

[Markus]

Hi
I am working on gd library with PHP to create graphs which is displaying correctly. But I want to display some information about this graph as text which will not be part of this graph means image or I want to print this graph in a table. but while doing this I got this error

Cannot modify header information- header already sent.

So how can I do this. If code is needed I will provide.

It means you've already had output from the script, so the headers cannot be sent.

And yes: code is needed.

[mukeshrasm]

It means you've already had output from the script, so the headers cannot be sent.

And yes: code is needed.

Ok I am giving you the code which I am using and I want to display this image inside a table

//php code
 
$image=imagecreate(200,200);
imagecolorallocate($image,150,200,30)
header("Content-Type image/png");
imagepng($image);
 

I want this image should come in the table.

[pks83]

Hello

I am also facing the same problem this the error message i am getting.

Warning: Cannot modify header information - headers already sent by (output started at header.php:96) in my.class.php on line 1198


What is happening over here is that i when i am trying to download an attached file i am passing the additional header information which is conflicting with the header info which has already being sent before.

Please help on how can i send this header info along with the one passed already.

I checked for all the whitespaces in the header file etc and removed it.

[Markus]

Ok I am giving you the code which I am using and I want to display this image inside a table

//php code
 
$image=imagecreate(200,200);
imagecolorallocate($image,150,200,30)
header("Content-Type image/png");
imagepng($image);
 

I want this image should come in the table.

Can you move lines 3 & 4 to after the header?

(i'm not experienced with headers...)

[mukeshrasm]

Hello

I am also facing the same problem this the error message i am getting.

Warning: Cannot modify header information - headers already sent by (output started at header.php:96) in my.class.php on line 1198


What is happening over here is that i when i am trying to download an attached file i am passing the additional header information which is conflicting with the header info which has already being sent before.

Please help on how can i send this header info along with the one passed already.

I checked for all the whitespaces in the header file etc and removed it.

Might be you will get your solution at this url:

http://in2.php.net/header

go through this url carefully.