accessing network shares with opendir()

[code green]

I am trying to access files on a different drive but the same server to where the script is running.
but I only get the error

failed to open dir: Invalid argument in C:\apache\xampp\htdocs\path\to\script

I have tried the following combinations

if(opendir('S:/folder/'))
	echo 'found';
if(opendir('S:/folder))
	echo 'found';
if(opendir('S:\folder\\'))
	echo 'found';
if(opendir('S:\folder))
	echo 'found';
if(opendir('//10.1.1.11/S/folder/'))
	echo 'found';
if(opendir('//10.1.1.11/S/folder))
	echo 'found';
if(opendir('\\\10.1.1.11\S\folder\\'))
	echo 'found';
if(opendir('\\\10.1.1.11\S\folder))
	echo 'found';

The system is Windows 2003 server.
Has anybody encountered this?

[pbmods]

Heya, Code Green.

Try using Windows-style path delimiters, e.g.,
[code=php]
if(opendir('S:\ \folder\\'))
[/code]

For the sake of efficiency, you may want to use file_exists() instead of opnedir() to check to see if the directory exists.

[code green]

Try using Windows-style path delimiters, e.g.,
Code: ( php )
if(opendir('S:\ \folder\\'))

I'll give that a go.

For the sake of efficiency, you may want to use file_exists() instead of opnedir() to check to see if the directory exists.

I am using opendir() because I want to read all the file with readdir()

[code green]

Sorry pbmods that didn't work either.
I think it is an IIS issue

[pbmods]

Heya, Code Green.

Check out this comment.

[code green]

Thanks but that doesn't really help me.
My php files and doc root are set up on the C drive.
Thats fine I can see all the C drive folders.
But I am trying to read files that are on the S drive.
I can get around this by running the php script on the S drive using the command line or CLI but obviously not in the browser.
That is OK but not ideal.

[DaveRandom]

Hi all...

Here is a full explaination of why this problem exists, and a work-around.

The issue is basically one of NT Authentication, and can be resolved by manipulating the user accounts on the host system.

[code green]

Thanks DaveRandom
I will be studying this page

http://networkm.co.uk/static/mapdrive.html

So far I can communicate between the Apache server
and a simple disk storage system such as buffalo.
But a network Windows server has always been a problem.