[Solved] Reload map for minigame

I have *.tar archive in map/
I would like to create function, witch will untar map, change level name and load map
But LevelProviderManager::getProvider don't work :c
My code:

PHP:

    // I have map/*.tar where '*' - standart name 
    // And I need to get load map with custom name
    public function loadMap($standartMapName, $customMapName){
        $path = $this->getServer()->getDataPath();
        exec("tar -xf $path/map/$standartMapName.tar -C $path/worlds");
        exec("mv $path/worlds/$standartMapName $path/worlds/$customMapName");
        exec("chmod -R 777 $path/worlds/$customMapName/*");
        $worldPath = "$path/worlds/$customMapName/";
        $provider = LevelProviderManager::getProvider($worldPath);
        $provider->getLevelData()->LevelName = new StringTag("LevelName", $customMapName);
        $this->getServer()->loadLevel($customMapName);
        return true;
    }

Error: Call to a member function getLevelData() on null

 

Solve, I change name of world dir and world name in level.dat

PHP:

    public function loadMap($standartMapName, $customMapName){
        $path = $this->plugin->getServer()->getDataPath();
        exec("tar -xf $path/map/$standartMapName.tar -C $path/worlds");
        exec("mv $path/worlds/$standartMapName $path/worlds/$customMapName");
        exec("chmod -R 777 $path/worlds/$customMapName/*");
        $worldPath = "$path/worlds/$customMapName/";
        $data = file_get_contents($worldPath."level.dat");
        $nbt = new NBT(NBT::BIG_ENDIAN);
        $nbt->readCompressed($data);
        $nbt->getData()->Data->LevelName = new StringTag("__name", $customMapName);
        $this->plugin->getServer()->loadLevel($customMapName);
    }

 

I prefer to move the map using only php not linux commands ^^