How to find the number of players in a world (lobby)

Hello, I am wondering how to make a code know how many players are in a world and when to start the game, I am new to pho and need help


Thanks in advance

 

You mean that?

PHP:

$arena = "Name of the world";
$levelArena = $this->getServer()->getLevelByName($arena);
$aop = count($levelArena->getPlayers());
$player->sendMessage("World players count: ".$aop."");


 

Yes, thanks but how do I now when to start the game when there are, say 4 players

 

use an if statement to compare the count of the players in the level to the amount of players you want when the game starts