public function csvToArray($filename = '', $delimiter = ',') {
   if (!file_exists($filename) || !is_readable($filename))
       return false;
       $header = null;
       $data = array();
       if (($handle = fopen($filename, 'r')) !== false) {
          while (($row = fgetcsv($handle, 1000, $delimiter)) !== false) {
             if (!$header)
                $header = $row;
             else
                $data[] = array_combine($header, $row);
          }
          fclose($handle);
       }
    return $data;
}