$hasmsg = true;
if (!isset($sentmsgs)) $sentmsgs = array();
$now = microtime(true);
while (count($sentmsgs) > 0 and $sentmsgs[0] < $now) array_shift($sentmsgs);
logmsg('Number of sent messages the last 4 seconds: '.count($sentmsgs), DEBUG_DEBUG);
if (count($sentmsgs) < 4) {
  if (!($msg = array_shift($messages[0]))) if (!($msg = array_shift($messages[1]))) $hasmsg = false;
  if ($hasmsg) {
    $lastsend = time();
    $sentmsgs[] = $now + 2 + 2 * count($sentmsgs);
    issuecommand($msg[0], $msg[1]);
  }
}