pocketmine\event\entity\EntityTeleportEvent::getFrom PHP Method

    public function getFrom()
    {
        return $this->from;
    }

 /**
  * @priority MONITOR
  */
 public function onTeleport(EntityTeleportEvent $ev)
 {
     if ($ev->isCancelled()) {
         return;
     }
     $pl = $ev->getEntity();
     if (!$pl instanceof Player) {
         return;
     }
     $from = $ev->getFrom()->getLevel();
     $to = $ev->getTo()->getLevel();
     if (!$from) {
         return;
     }
     if (!$to) {
         return;
     }
     if ($from === $to) {
         return;
     }
     //TODO HACK: removes tile entities that linger whenever
     // to a different world
     $pk = new UpdateBlockPacket();
     foreach ($from->getTiles() as $tile) {
         $pk->records[] = [$tile->x, $tile->z, $tile->y, 0, 0, UpdateBlockPacket::FLAG_NONE];
     }
     if (count($pk->records)) {
         $pl->dataPacket($pk);
     }
 }