pocketmine\event\server\QueryRegenerateEvent::setMaxPlayerCount PHP Method

    public function setMaxPlayerCount($count)
    {
        $this->maxPlayers = (int) $count;
    }

 public function onServerQuery(QueryRegenerateEvent $ev)
 {
     $players = count($this->owner->getServer()->getOnlinePlayers());
     $maxplayers = $this->owner->getServer()->getMaxPlayers();
     $lst = $this->owner->getModule("ServerList");
     foreach ($lst->getIds() as $i) {
         if ($lst->getServerAttr($i, "no-merge-slots", false)) {
             continue;
         }
         if (!$lst->getServerAttr($i, "no-motd-task", false)) {
             $cc = $lst->getQueryData($i, "motd");
             if ($cc !== null) {
                 $players += $cc["players"];
                 $maxplayers += $cc["max-players"];
             }
         }
         if (!$lst->getServerAttr($i, "no-query-task", false)) {
             $cc = $lst->getQueryData($i, "query.info");
             if ($cc !== null) {
                 $players += $cc["Players"];
                 $maxplayers += $cc["MaxPlayers"];
             }
         }
     }
     $ev->setPlayerCount($players);
     $ev->setMaxPlayerCount($maxplayers);
 }