"include" path problem

[Anon]

Hi, all! How can I solve the following:
I have form file (form.php3) which I include everywhere in my project. This file contains image, the picture for this image is in the same folder with this included file. So, the problem is that when I include this file into the file with another location (let's say, main.php3), image is not found: now it is expected in the same folder with main.php3. So, how can I manage this - not to pass image path to form.php3 each time I include it? How to force form.php3 to look for image in its folder, not in main.php3 folder?
Thanks for help.

[Anon]

make sure the image path is relative to the root of the webserver. If that doesn't work, just use the full filepath.

[Anon]

That is true, but I will have to move this project to another server, and it will be really boring to go through all files and search for all paths. Besides that, may be it will not be me who'll do it. That's why I wanted to get rid of setting any absolute paths. I just wanted to use picture which is in the same folder with included file and to forget about its path.
Anyway, thanks :-)

[petrb]

Arta's solution is best, I don't understand why you can't get that to work, but here is something that should work also:
$domain = getenv(server_name);
if ($domain == "www.developmentserver.org") {
$imgpath = "/home/developmentserver-www/imagedir/img.png";
} else {
$imgpath = "/home/productionserver-www/imagedir/img.png";
}

--ph

[Anon]

OK, thank you, guys, for your help! Paths is what I have already done, nad I will try with server_name.