php to read information from IIS - IIsWebServer class

In C# I can use the following to get information from the IIS Server Object
DirectoryEntry entry = new DirectoryEntry("IIS://" + server + "/W3SVC", "user", "pass");

In VBS I can use the following
GetObject("IIS://" & server & "/W3SVC")

How about in PHP? What would be the equivalent? using a new COM? which one?
NOTE: I must do this in PHP and not .NET
In .net this comes from System.DirectoryServices.dll

I can do the following to get info from Win32_BIOS
$obj = new COM ( "winmgmts:{impersonationLevel=impersonate}//".$server."/root/CIMV2" );
$fso = new COM ( "Scripting.FileSystemObject" );
$obj->ExecQuery("Select * from Win32_BIOS");

Thanks

Have you tried PHP's LDAP library?