private function getGUID()
{
if (function_exists('com_create_guid')) {
return com_create_guid();
} else {
mt_srand((double) microtime() * 10000);
//optional for php 4.2.0 and up.
$charid = strtoupper(md5(uniqid(rand(), true)));
$hyphen = chr(45);
// "-"
$uuid = chr(123) . substr($charid, 0, 8) . $hyphen . substr($charid, 8, 4) . $hyphen . substr($charid, 12, 4) . $hyphen . substr($charid, 16, 4) . $hyphen . substr($charid, 20, 12) . chr(125);
// "}"
return $uuid;
}
}