Remote file information (PHP 4.0)

Is there a way, when requesting remote files (using fopen() or file()) to determine the base directory of the file retrieved? For instance, if I did: $file = file("http://www.host.com/directory/php"); Several things can happen. One is that theres an actual file named php that is retrieved. Secondly, php could be a directory and the file index.html is retrieved from that directory. Or php could be a directory without an index, in which case a directory listing is generated or something to that effect. But what I want to be able to do is to determine what the base directory is in any case. For instance if php was a file, the base would be http://www.host.com/directory/, if it was a directory with an index the base would be http://www.host.com/directory/php. Anyone know if this information is available? Thanks, Erik Fears.