Horde_Mime_Part::setBytes PHP Method

    public function setBytes($bytes)
    {
        /* Consider 'size' disposition parameter to be the canonical size.
         * Only set bytes if that value doesn't exist. */
        if (!$this->getDispositionParameter('size')) {
            $this->setDispositionParameter('size', $bytes);
        }
    }

 /**
  * Recursively parse BODYSTRUCTURE data from a FETCH return (see
  * RFC 3501 [7.4.2]).
  *
  * @param array $data  The tokenized information from the server.
  *
  * @return array  The array of bodystructure information.
  */
 protected function _parseStructure($data)
 {
     $ob = new Horde_Mime_Part();
     // If index 0 is an array, this is a multipart part.
     if (is_array($data[0])) {
         // Keep going through array values until we find a non-array.
         for ($i = 0, $cnt = count($data); $i < $cnt; ++$i) {
             if (!is_array($data[$i])) {
                 break;
             }
             $ob->addPart($this->_parseStructure($data[$i]));
         }
         // The first string entry after an array entry gives us the
         // subpart type.
         $ob->setType('multipart/' . $data[$i]);
         // After the subtype is further extension information. This
         // information MAY not appear for BODYSTRUCTURE requests.
         // This is parameter information.
         if (isset($data[++$i]) && is_array($data[$i])) {
             foreach ($this->_parseStructureParams($data[$i], 'content-type') as $key => $val) {
                 $ob->setContentTypeParameter($key, $val);
             }
         }
         // This is disposition information.
         if (isset($data[++$i]) && is_array($data[$i])) {
             $ob->setDisposition($data[$i][0]);
             foreach ($this->_parseStructureParams($data[$i][1], 'content-disposition') as $key => $val) {
                 $ob->setDispositionParameter($key, $val);
             }
         }
         // This is language information. It is either a single value or
         // a list of values.
         if (isset($data[++$i])) {
             $ob->setLanguage($data[$i]);
         }
         // Ignore: location (RFC 2557)
         // There can be further information returned in the future, but
         // for now we are done.
     } else {
         $ob->setType($data[0] . '/' . $data[1]);
         foreach ($this->_parseStructureParams($data[2], 'content-type') as $key => $val) {
             $ob->setContentTypeParameter($key, $val);
         }
         if ($data[3] !== null) {
             $ob->setContentId($data[3]);
         }
         if ($data[4] !== null) {
             $ob->setDescription(Horde_Mime::decode($data[4]));
         }
         if ($data[5] !== null) {
             $ob->setTransferEncoding($data[5]);
         }
         if ($data[6] !== null) {
             $ob->setBytes($data[6]);
         }
         // If the type is 'message/rfc822' or 'text/*', several extra
         // fields are included
         switch ($ob->getPrimaryType()) {
             case 'message':
                 if ($ob->getSubType() == 'rfc822') {
                     // Ignore: envelope
                     $ob->addPart($this->_parseStructure($data[8]));
                     // Ignore: lines
                     $i = 10;
                 } else {
                     $i = 7;
                 }
                 break;
             case 'text':
                 // Ignore: lines
                 $i = 8;
                 break;
             default:
                 $i = 7;
                 break;
         }
         // After the subtype is further extension information. This
         // information MAY appear for BODYSTRUCTURE requests.
         // Ignore: MD5
         // This is disposition information
         if (isset($data[++$i]) && is_array($data[$i])) {
             $ob->setDisposition($data[$i][0]);
             foreach ($this->_parseStructureParams($data[$i][1], 'content-disposition') as $key => $val) {
                 $ob->setDispositionParameter($key, $val);
             }
         }
         // This is language information. It is either a single value or
         // a list of values.
         if (isset($data[++$i])) {
             $ob->setLanguage($data[$i]);
         }
         // Ignore: location (RFC 2557)
     }
     return $ob;
 }