一个odbc连mssql分页的类

<!--二泉.net -->
<?
class Pages{
    var $cn;        //连接数据库游标
    var $d;            //连接数据表的游标
    var $result;    //结果
    var $dsn;        //dsn源
    var $user;        //用户名    
    var $pass;        //密码

    var $total;        //记录总数
    var $pages;        //总页数
    var $onepage;    //每页条数
    var $page;        //当前页
    var $fre;        //上一页
    var $net;        //下一页
    var $i;            //控制每页显示

    function getConnect($dsn,$user,$pass){
        $this->[email protected]_connect($dsn,$user,$pass);
        if(!$this->cn){
            $error="连接数据库出错";
            $this->getMess($error);
        }
    }

    function getDo($sql){//从表中查询数据
        $this->[email protected]_do($this->cn,$sql);
        if(!$this->d){
            $error="查询时发生了小错误......";
            $this->getMess($error);
        }
        return $this->d;
    }

    function getTotal($sql){
        $this->sql=$sql;
        $dT=$this->getDo($this->sql);        //求总数的游标
        $this->total=odbc_result($dT,'total');//这里为何不能$this->d呢？
        return $this->total;
    }

    function getList($sql,$onepage,$page){
        $this->s=$sql;
        $this->onepage=$onepage;
        $this->page=$page;
        $this->dList=$this->getDo($this->s);    //连接表的游标
        $this->pages=ceil($this->total/$this->onepage);
        if($this->pages==0)
            $this->pages++; //不能取到第0页
        if(!isset($this->page))
            $this->page=1;
        $this->fre = $this->page-1;                    //将显示的页数
        $this->nxt = $this->page+1;
        $this->nums=($this->page-1)*$this->onepage;
        //if($this->nums!=0){
        //    for($this->i=0;$this->i<$pg->getNums();odbc_fetch_row($this->dd),$this->i++);//同上
        /

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