rackspace cloudfiles api - most efficient method to return container files

Using the Rackspace CloudFiles API (in PHP), there are times when I need to get just a list of the all the current files in the container. What I just came up with is terribly slow and in-efficient because it gets every object pertaining to that file. So what I have:

My Function

function clean_cdn() {
    $objects = $this->CI->cfiles->get_objects();
    foreach ($objects as $object) {
        echo $object->name;
    }
}

get_objects wrapper for CodeIgniter

public function get_objects() {
    $my_container = $this->container_info();

    try {
        return $my_container->get_objects(0, NULL, NULL, NULL);
    } catch(Exception $e) {
        $this->_handle_error($e);
        return FALSE;
    }
}

cloudfiles get_objects function

function get_objects($limit=0, $marker=NULL, $prefix=NULL, $path=NULL)
{
    list($status, $reason, $obj_array) =
        $this->cfs_http->get_objects($this->name, $limit,
            $marker, $prefix, $path);

    if ($status < 200 || $status > 299) {
        throw new InvalidResponseException(
            "Invalid response (".$status."): ".$this->cfs_http->get_error());
    }

    $objects = array();
    foreach ($obj_array as $obj) {
        $tmp = new CF_Object($this, $obj["name"], False, True);
        $tmp->content_type = $obj["content_type"];
        $tmp->content_length = (float) $obj["bytes"];
        $tmp->set_etag($obj["hash"]);
        $tmp->last_modified = $obj["last_modified"];
        $objects[] = $tmp;
    }
    return $objects;
}

This will give me just the name (which is all I need for what I'm doing currently) but is there a better way?

Update

I noticed that I could technically just put all the "directories" in an array and iterate over them in a foreach loop, listing each of them as the 4th parameter of get_objects. So get_objects(0, NULL, NULL, 'css'), etc. Still seems like there's a better way though.

If you are using the old php-cloudfiles bindings, use the list_objects() method. This will just return a list of the objects in the container.

php-cloudfiles bindings are deprecated now, the new official php cloudfiles bindings are php-opencloud (object-store) and you can find the section on listing objects in a container here