I am really new to PHP, so I am kind of confused seeing these different operators all day. Here is some code I came across when watching a video tutorail, I'd appreciate it if some could explain a little bit:

   function index()
    {
    $config = Array(
        'protocol'    => 'smtp',
        'smtp_host' => 'ssl://smtp.googlemail.com',
        'smtp_port'  => 465,
        'smtp_user' => '[email protected]',
        'smtp_pass' =>'password',
    );
        $this->load->library('email', $config);
        $this->email->set_newline("\r\n");

        $this->email->from('[email protected]', 'Jerry');
        $this->email->to('[email protected]');
        $this->email->subject('this is an email test');
        $this->email->message('this is test message!');

        if($this->email->send())
        {
            echo 'Your email was sent';
        }
        else 
        {
            show_error($this->email->print_debugger());
        }
    }

    ...