delete a file

    function deleteFile($info)
    {
        // code to delete file
        if(@unlink($this->dataDir.$info['uploadName']))
        {
            $query = "update emp_upload_dir set file_name = '' where id = '".$this->escapeData($info['id'])."' limit 1";
            $result = $this->Editor->doQuery($query);
            if($result)
            {
                return true;
            }
        }
        $this->Editor->warnings[] = 'There was an error deleting the file.';
        return false;
    }