//获取所有的表结构 生成
        public function getdesc(){
            $sql="SHOW FULL COLUMNS FROM t_admin_info";
            return $this->db->query($sql)->result_array();
        }


  //测试
    public function ceshi(){
        $row=$this->oAdmin->getdesc();
       // var_dump($row);
        //获取所有的数组
        foreach($row as $vals){

           
            //出现int类型
            if(strstr($vals['Type'],'int')){
              echo  "array('field'   => '{$vals['Field']}','label'   => '{$vals['Comment']}','rules' => 'integer'),"."</br>";
            }
            if(strstr($vals['Type'],'varchar')){
                echo  "array('field'   => '{$vals['Field']}','label'   => '{$vals['Comment']}','rules' => 'htmlspecialchars'),"."</br>";
            }
           
        }
    }