'Notice: Array to string conversion in / Warning: Illegal offset type

Hello I have a code which occurs 2 errors in the first line.

Notice: Array to string conversion and Warning: Illegal offset type 

while (isset($config['group']) AND isset($config_file->$config['group']))
    {
        // Temporarily store config group name
        $group = $config['group'];
        unset($config['group']);

        // Add config group values, not overwriting existing keys
        $config += $config_file->$group;
    }

How can i Fix it?

phparrays


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