Mysqli mysqli = new Mysqli(env, host, userName, password, "", 3306, "");
Mysqli mysqli = new Mysqli(env, host, userName, password, "", 3306, "", null, null);
  public Value mysql_connect(Env env,                             @Optional String host,                             @Optional String userName,                             @Optional String password,                             @Optional Value newLinkV,                             @Optional Value flagsV)  {    Mysqli mysqli = new Mysqli(env, host, userName, password, "", 3306, "");    Value value = env.wrapJava(mysqli);    env.setSpecialValue("caucho.mysql", mysqli);    return value;  }