Hmm..the only possible helpful thing I found is this comment from the php manual:
Here is a fopen("http://...","r")
tip that costs me an hour:If the file you want to open via HTTP does not
allow anonymous access, fopen("http://...","r")
will fail. I tried to fopen("http://...","r")
a file on one of my internal servers that does not allow anonymous access
and PHP always returnd an "Error 0". If I change the server
setting to allow anonymous access it works fine.
Note:It's a Windows2000/IIS 5 server.
Hope that helps some...
Matt Wade
codewalkers.com