$this->result = M('book ')->where(array('ko'=>'ok'))->select();这个是第一个可以用$this直接分配,
$this->result2= M('book')->order('1 DESC')->limit(4)->select();
$this->result3= M('qiu')->order('1 DESC')->limit(4)->select();
$this->result4= M('ment')->where(array('id'=>1))->select();