thinkphp 控制器controller完成數據驗證,validate()、create()

public function person_pic_post(){
    $uid = $this->userid;
    $rules = array(
        //array(驗證字段,驗證規則,錯誤提示,驗證條件,附加規則,驗證時間)
        array('acard', 'require', '身份證正面不能為空！', 1 ),
        array('bcard', 'require', '身份證反面不能為空！', 1 ),
    );
    $users_model=M("persion_info");
    if($data = $users_model->validate($rules)->create()){
        $data['utime'] = $this->ctime;
        $result=$users_model->where(array('uid'=>$uid))->save($data);
    }else{
        $this->error($users_model->getError());
    }

    if($result!==false){
        $this->success("認證成功！");
    }else{
        $this->error("認證失敗！");
    }