Block Command

It's possible block all command except one?

 

For a single player or the whose server?

 

In a server with more player

 

It is possible.

PHP:

$whitelistedCommands = ["gamemode"];
foreach($this->getServer()->getCommandMap()->getCommands() as $command) {
    if(!in_array($command->getName(), $whitelistedCommands)) {
        $this->getServer()->getCommandMap()->unregister($command);
    }
}


 

Thanks