public function loadByEventAndtimeStamp(EventModel $event, $timestamp)
{
global $DB;
$stat = $DB->prepare("SELECT event_history.* FROM event_history " . "WHERE event_history.event_id =:id AND event_history.created_at <= :cat ORDER BY event_history.created_at DESC");
$stat->execute(array('id' => $event->getId(), 'cat' => date("Y-m-d H:i:s", $timestamp)));
if ($stat->rowCount() > 0) {
$event = new EventHistoryModel();
$event->setFromDataBaseRow($stat->fetch());
while ($event->isAnyDataUnknown() && ($data = $stat->fetch())) {
$event->setFromDataBaseSupplementaryRow($data);
}
return $event;
}
}