make edit of .yaml

I want to make like

Code:

blue : playername, playername2 ...

but it changes to

Code:

A: player
player: player's name

here is code

Code:

  @mkdir ($this->getDataFolder());
      $this->database = new Config ($this->getDataFolder()."data.yml",Config::YAML,[
          "A" => "player"
      ]);
      $this->db = $this->database->getAll();

Code:

case "TA"
if(isset($args[1])){

              $this->db["player"]="$args[1]";
              $this->database->setAll($this->db);
$this->database->save();

            }

And if I add a player's name, the existing player's name disappears. How do I make it possible for many people to exist in A: ?

 

arrays.
$this->db["blue"] = ["player1", "player2"];

 

Is = use by : ?

 

How can I get Player that is in "A"?

 

$player = $this->db["A"];

 

$this->db["blue"] = ["player1", "player2"];
//set an array in "blue"



$arrayofplayers = $this->db["blue"];
//read the array in "blue"

 

Can I use any other thing that I want instead of using database?

and is db means database?