How to get random online player and save name to config

How would i get a random online player and save his name to player.yml

Thanks for your help

PHP:

# Get
$players = $this->getServer()->getOnlinePlayers();
if(($c = count($players)) > 0) {
   $player = $players[mt_rand(0, $c - 1)];
}


I suggest to use \pocketmine\utils\Config

PHP:

# Save
$data = [
   "name" => $player->getName(),
   "online" => $player->isOnline() ? "true" : "false"
];
$playerFile = new Config($this->getDataFolder()."players/".strtolower(trim($player->getName())).".yml", Config::YAML, $data);
$playerFile->save();


Use mkdir to create 'players' folder. To get random player from array you can also use array_rand

Why not array_rand()?

To adapt it to my plugin i used this code:

PHP:

$arena = $config->get("arenas");
                $levelArena = $this->plugin->getServer()->getLevelByName($arena);
                if($levelArena instanceof Level)
                {
                    $players = $levelArena->getPlayers();
if(($c = count($players)) > 0) {
   $player = $players[mt_rand(0, $c - 1)];
   $name = $player->getName();
   $judge = new Config($this->plugin->getDataFolder() . "/judge.yml", Config::YAML);
   $judge->set("judge", $name);
   $judge->save();

It retured an error of something related to array to string conversion when the game started