php设计模式 DAO(数据访问对象模式)

复制代码 代码如下:


class baseDAO
{
var $_db = null;
var $_table = null;

function baseDAO($config)
{
$this->_db = new MysqlDB(); // 这里的不能进行操作
}


function fetch($filter = array(),$field = "*",$page = 1,$limit = null)
{
$this->_db->select($filed)->from($this->_table)->where($filter)->limit($page,$limit);
return $this->_db->execute();
}

function update(){}
function delete(){}
function insert(){}
}

class MemberDAO extends baseDAO
{
var $_table = "member";
}

$oMember = new MemberDAO();
$oMember->fetch();


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