/**
* Send message
* @param array $params
* @param string $url (optional)
* @return boolean
*/
public static function send(array $params, $url = MESSAGE_API_URL)
{
$msg = new MessageAPI();
if ($url != MESSAGE_API_URL) {
$msg->setURL($url);
}
$rc = $msg->send($params);
SingleMessageAPI::$errorMessage = $msg->getLastError();
$msg->close();
return $rc;
}