Remove a value from an array config

I have this:

PHP:

Badwords:
- word1
- word2
- word3

lets say i want to remove word2 from the list, but i cant find solution,
ive tried:

PHP:

$words = $this->cfg->get("Badwords");
unset($words["word2"]);
$this->cfg->set("Badwords", $words);
$this->cfg->save();

but it dont seems to work...
Any other ways?

Is the first one a config a cornflakes packet a shampoo whats the first file?

what do you mean lol

https://github.com/PocketMine/PocketMine-MP/blob/master/src/pocketmine/utils/Config.php

What is $this->cfg?

I think $this->cfg = new Config(blabla, Config::YAML);
and not used in main file

May someone help me please?

PHP:

$path = $this->getServer()->getDataPath()."plugins/MyPlugin/config.yml";

file_put_contents(str_replace("- badword2", "", file_get_contents($path)), $path);

Instead Server::getDataPath() method, why not use directly getDataFolder()?

PHP:

$path = $this->getDataFolder() . "file.yml";

It's not a big deal, guys. Just unset the index.

PHP:

if(isset($this->cfg["Badwords"])){
unset($this->cfg["Badwords"][0]);//unset word 1
unset($this->cfg["Badwords"][1]);//unset word 2
//etc...
}