/**
  * Select attachment file type and return result
  *
  * @param array $mailvars
  * @param int $type
  * @return mixed attachment content
  */
 public static function get_content($config)
 {
     // Remove control fields
     $mailvars = attach_mail_variables::remove_control_fields($config['mailvars'], $config['control']);
     // Create VCard
     if ($config['type'] == G10E_ATTACH_TYPE_VCARD) {
         if ($res = attach_mail_variables::vcard($mailvars)) {
             return $res;
         }
     }
     // Create CSV
     if ($config['type'] == G10E_ATTACH_TYPE_CSV) {
         if ($res = attach_mail_variables::csv($mailvars, $config)) {
             return $res;
         }
     }
 }