file path problem????

[tutunmayan]

Hi I try to resiz images with GD library but the functions of the library cannot find the file to read when I use an upper dir (a path starting with ../ ). But the functions can write to upper dirs.
everything is ok when I use directories under the code level.
What is the problem?

---

these paths are ok, everything works fine:

$image_to_resize="img/original/image.jpg";
$image_display_path="img/fotolar/image.jpg";
$image_thumb_path="img/thumbs/image.jpg";

But these are not:

$image_to_resize="../img/original/image.jpg";
$image_display_path="../img/fotolar/image.jpg";
$image_thumb_path="../img/thumbs/image.jpg";

these errors occure

Warning: imagesx(): supplied argument is not a valid Image resource in ......
Warning: imagesy(): supplied argument is not a valid Image resource in ........
Warning: imagecopyresampled(): supplied argument is not a valid Image resource in .....
Warning: imagedestroy(): supplied argument is not a valid Image resource in .....

[bradgrafelman]

Well, two things:

1. ../img/original/ isn't a valid directory. Are you sure this is what you mean? Example, if the script is located here: /home/myusername/scripts/myscript.php then this path is pointing to: /home/myusername/img/original/ . Is this what you intended?

2. ../img/original/ IS a valid directory, but the script doesn't have permission to read files in that directory.

[tutunmayan]

I tried both but the problem goes on. GD functions still can write to paths starting with ../ but cannot read.