Reader::__construct PHP Метод

    public function __construct(BytesIO $stream, $simple = false)
    {
        parent::__construct($stream);
        $this->classref = array();
        $this->refer = $simple ? new FakeReaderRefer() : new RealReaderRefer();
    }

 function __construct($file, $debug = null)
 {
     parent::__construct($debug);
     if (($this->_file_handler = fopen($file, "r")) == false) {
         throw new \Exception("Error: Invalid file");
     }
 }