class BD_connect
{
    private static $instance = NULL;
    public static $err = 0;
    private $db;

    public static function getInstance()
    {
        if (self::$instance == NULL) {
            self::$instance = new BD_connect();
        }
        return self::$instance;
    }

    private function __construct()
    {
        $this->db = mysqli_init(); 
        $this->db->real_connect(
            '127.0.0.1',
            'xxx',
            '',
            'xxx'
        );
        if ($this->db->connect_errno) {
            echo $this->db->connect_error . ' ' . $this->db->connect_errno;
        }
        $this->db->set_charset('Utf8') or die($this->db->error . ' ' . $this->db->errno);
        $this->db->query("set lc_time_names=ru_RU") or die($this->db->error . ' ' . $this->db->errno);
    }

    private function __clone()
    {
    }

    public function getConnection()
    {
        return $this->db;
    }
	public static function db_iniciate_connect()
    {
    return BD_connect::getInstance()->getConnection();
    }
}