habbo retro error

[bartjuhh45]

I have followed this thread: https://forum.ragezone.com/f335/habb...2013-a-908171/
But when i would test my site, i get this error (see image). Why?
The code is from line 43 to 62.

final public function connect($type)    {
        global $core, $_CONFIG;
        if(!$this->connected)
        {
            $this->connection = $this->mysql[$type]($_CONFIG['mysql']['hostname'], $_CONFIG['mysql']['username'], $_CONFIG['mysql']['password']);
            
            if($this->connection)
            {
                $mydatabase = $this->mysql['select_db']($_CONFIG['mysql']['database'], $this->connection);
                
                if($mydatabase)
                {
                    $this->connected = true;    
                }
                else
                {
                    $core->systemError('MySQL Engine', 'MySQL could not connect to database');
                }
            }

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Also, i am testing to make a hamachi r63 hotel. I`ve worked with different tutorials, but i get also the same blank page if i go to the hamachi ip in google chrome.. What can be the problem?

[MentaL]