Extending the FTP Class

[eluser]Dave Blencowe[/eluser]
Hi there,

Recently I have been attempting to extend the CI FTP class so that I can issue a command and it will recursively list files/folders in a multi-dimensional array. I have provided an example below:
array (
index.php
style.css
application/
views/
welcome.php
controllers/
welcome.php
system/
files.php
);

So far I have developed the following code which does the first level of the supplied dir but I need to make it recursive

Code:

<?php
class MY_FTP extends CI_FTP {

    function map ($path, $depth = 5)
    {
        if ( ! $this->_is_conn())
        {
            return FALSE;
        }
         ftp_chdir($this->conn_id, $path);
         $pwd = ftp_pwd($this->conn_id);
        ${$pwd} = array();
        $cur = $this->list_files($path);        
         $base = $pwd;
         $i = 0;
        
        $filter = array('.', '..', 'cgi-bin');
        
        foreach($cur as $item) {        
            $res = ftp_size($this->conn_id, $item);
            ${$pwd}[$item]['name'] = $item;            
        
            if("$res" != "-1") {
                ${$pwd}[$item]['type'] = 'file';
            } else {
                ${$pwd}[$item]['type'] = 'dir';
            }
            
            if (in_array(${$pwd}[$item]['name'], $filter))
            {
                unset(${$pwd}[$item]);
            }            
            
            $i++;
        }
        
        foreach (${$pwd} as $item) {
            if ($item['type'] == 'dir')
            {
                ${$pwd}[$item['name']]['sub'] = $this->list_files($path."/".$item['name']);
            }
        }

        return ${$pwd};
    }

}

Any ideas would be welcome?

Thanks a lot for any help that may be offered,
Dave