getimagesize (Bug? or error in PhP?)

Hi, I want to have the width and the height of an image, if I place the image on my server then it works buth if i want to load the image from another server then I have errors, is this a bug in PHP, or is there another solution. Because in the php.net manual they use Getimagesize() too for loading an image from another site (http://www.php.net/manual/en/function.getimagesize.php) Please post a message if you know what I must do, thanks bram <html> <head> <title>GetImageSize</title> </head> <body> <? $url="http://toontime.dk/cli/pt09.jpg"; $imagehw = GetImageSize("$url"); $imagewidth = $imagehw[0]; $imageheight = $imagehw[1]; print"$imagewidth "; print"$imageheight "; ?> </body> </html>