foreach ($parts[$i]->dparameters as $object) {
if (strtolower($object->attribute) == 'filename') {
    $file = $object->value;
    $filename = pathinfo($file, PATHINFO_FILENAME);
    $ext = pathinfo($file, PATHINFO_EXTENSION);
    $dst = 'files'. '/' . $filename . "." . $ext;

    /* don't overwrite */
    if (!file_exists($dst)) {
        $fp = fopen($dst, 'w');
        $body = imap_fetchbody($mbox, imap_msgno($mbox, $id), $fpos);
        $data = $this->get_decode_value($body, $object->type);
        fputs($fp, $data);
        fclose($fp);
    }
}

object(stdClass)#276 (11) {
["type"] =>
 int(1)
["encoding"] =>
 int(0)
["ifsubtype"] =>
 int(1)
["subtype"] =>
 string(7) "RELATED"
["ifdescription"] =>
 int(0)
["ifid"] =>
 int(0)
["ifdisposition"] =>
 int(0)
["ifdparameters"] =>
 int(0)
["ifparameters"] =>
 int(1)
["parameters"] =>
 array(1) {
[0] =>
 object(stdClass)#275 (2) {
["attribute"] =>
 string(8) "boundary"
["value"] =>
 string(36) "------------06304D14834AD529353E49FD"
}
}
["parts"] =>
 array(2) {
[0] =>
 object(stdClass)#274 (12) {
["type"] =>
 int(0)
["encoding"] =>
 int(1)
["ifsubtype"] =>
 int(1)
["subtype"] =>
 string(4) "HTML"
["ifdescription"] =>
 int(0)
["ifid"] =>
 int(0)
["lines"] =>
 int(18)
["bytes"] =>
 int(487)
["ifdisposition"] =>
 int(0)
["ifdparameters"] =>
 int(0)
["ifparameters"] =>
 int(1)
["parameters"] =>
 array(1) {
[0] =>
 object(stdClass)#273 (2) {
["attribute"] =>
 string(7) "charset"
["value"] =>
 string(5) "utf-8"
}
}
}
[1] =>
 object(stdClass)#272 (14) {
["type"] =>
 int(5)
["encoding"] =>
 int(3)
["ifsubtype"] =>
 int(1)
["subtype"] =>
 string(4) "JPEG"
["ifdescription"] =>
 int(0)
["ifid"] =>
 int(1)
["id"] =>
 string(37) ""
["bytes"] =>
 int(171440)
["ifdisposition"] =>
 int(1)
["disposition"] =>
 string(6) "inline"
["ifdparameters"] =>
 int(1)
["dparameters"] =>
 array(1) {
[0] =>
 object(stdClass)#271 (2) {
["attribute"] =>
 string(8) "filename"
["value"] =>
 string(21) "revised8 10.43.39.jpg"
}
}
["ifparameters"] =>
 int(1)
["parameters"] =>
 array(1) {
[0] =>
 object(stdClass)#270 (2) {
["attribute"] =>
 string(4) "name"
["value"] =>
 string(21) "revised8 10.43.39.jpg"
}
}
}
}
}