Header and images problem

rubio

I´m using two joined classes in my apli. First of then cath a column of a mysql table, and the second show their values in a line chart image. This second one works fine alone, but i get this result in my browser when i use it with the first one:
Warning: Cannot add header information - headers already sent by (output started at c:\apache\htdocs\test\test.php:7) in c:\apache\htdocs\test\Linechart.php on line 30
ÿØÿàJFIFÿþ:CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 0 ÿÛCÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÛC

The image is no shown correctly, but it's shown like text.
Can anybody help me please???
Thanks.

IceD

Try
header("Content-Type: image/gif");
header("Content-Disposition: inline; filename=img.gif);

rubio

Sorry, I didn't explain it so much. The second class creates a jpeg image and shows it directly in the browser. I don't think i could solve my trouble with your solution, thanks anyhow.
Got any clue how could i solve it?
Thanks.

IceD