Unset error

This f***ing annoying error won't go away, I tried different methods and it's still happening...

Code:

PocketMine-MP Crash Dump Sat Dec 12 18:58:54 AKST 2015

Error: Can't use method return value in write context
File: /BeastHub/src/xbeastmode/beasthub/BeastHub
Line: 75
Type: E_COMPILE_ERROR

THIS CRASH WAS CAUSED BY A PLUGIN

Code:
[66]             [$cfa[$world][$hub]["X"] => $player->getX(), $cfa[$world][$hub]["Y"] => $player->getY(), $cfa[$world][$hub]["Z"] => $player->getZ()]);
[67]         $this->getConfig()->save();
[68]     }
[69]     /**
[70]      * @param $world
[71]      * @param $hub
[72]      */
[73]     public function deleteHub($world, $hub)
[74]     {
[75]         unset($this->getConfig()->getAll()[$world][$hub]);
[76]         $this->getConfig()->save();
[77]     }
[78]     /**
[79]      * @param CommandSender $issuer
[80]      * @param Command $cmd
[81]      * @param $alias
[82]      * @param array $param
[83]      * @return bool|void
[84]      */
[85]     public function onCommand(CommandSender $issuer, Command $cmd, $alias, array $param)

Are $world and $hub both supposed to be strings? And why not simply use Config->remove($key) instead of unset(Config->getAll()[$key])?

Try this

PHP:

$config = $this->getConfig()->getAll();
unset($config[$world][$hub]);
$this->getConfig()->setAll($config);
$this->getConfig()->save();


It works, now I just have to fix bugs. Thanks.

You cannot unset directly because getAll() doesn't return by reference. But you can unset directly for get(), which returns by reference.