改自erquan 的 odbc连mssql分页的类，加了一些功能，与本论坛类似

2024-05-04 22:56:04

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<?
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

    ##############################
    ########  连接数据库 ##########
    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);
        }
    }

    ##############################
      ######## 进行表的查询 #########
    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;
    }

       #################################
      ######## 求表中数据的总量 #########
    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,total 为一个字段
        //    $this->[email protected]_num_rows($dt);         //应唠叨老大的意见，odbc_num_rows 不能用，不知为何,返回为-1
        return $this->total;
    }

    ##############################
    ######## 进行表的查询 #########
    function getlist($sql,$onepage,$page){
        if ($page<>"" and $page<1)         //当此页小于时的处理
            $page=1;
        $this->s=$sql;
        $this->onepage=$onepage;        //每页显示的记录数
        $this->page=$page;        //页数
        $this->dlist=$this->getdo($this->s);      //连接表的游标
        $this->pages=ceil($this->total/$this->onepage);     //计算大于指定数的最小整数
        if ($this->page>$this->pages)          //当此页大于最大页的处理
            $this->page=$this->pages;
        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;
        return $this->dlist;
    }

    ##############################
    function getfetch_row($dlist){
        return odbc_fetch_row($dlist);
    }

       ##############################
    function getresult($dlist,$num){
        return odbc_result($dlist,$num);
    }
    ##############################
    ######## 翻页 ################
    function getfanye(){
        $str="";
        if($this->page!=1)
            $str.="<form name=go2to form method=post action='".$php_self."'><a href=".$php_self."?page=1> 首页 </a><a href=".$php_self."?page=".$this->fre."> 前页 </a>";
        else
            $str.="<font color=999999>首页前页</font>";
        if($this->page<$this->pages)
            $str.="<a href=".$php_self."?page=".$this->nxt."> 后页 </a>";
        else
            $str.="<font color=999999> 后页 </font>";
        if($this->page!=$this->pages)
            $str.="<a href=".$php_self."?page=".$this->pages."> 尾页 </a>";
        else
            $str.="<font color=999999> 尾页 </font>";

        $str.="共".$this->pages."页";
        $str.="<font color='000064'>  转到第<input type='text' name='page' size=2 maxlength=3 style='font-size: 9pt; color:#00006a; position: relative; height: 18' value=".$this->page.">页</font> ";
        $str.="<input class=button type='button' value='确定' onclick=check() style='font-family: 宋体; font-size: 9pt; color: #000073; position: relative; height: 19'></form>";
        return $str;
    }

    ####################################
    ######## 对进行提交表单的验验 #########
    function check()
    {
       if (isnan(go2to.page.value))
            echo "javascript:alert('请正确填写转到页数！');";
          else if (go2to.page.value==""){
            echo "javascript:alert('请输入转到页数！');";
         }
       else{
            go2to.submit();
       }
    }

    function getnums(){       //每页最初的记录数
        return $this->nums;
    }

    function getonepage(){        //每页实际条数
        return $this->onepage;
    }

    function geti(){      //暂未用
    //    $this->i=$this-pageone*($this->page-1)
        return $this->i;
    }

    function getpage(){
        return $this->page;
    }

    function getmess($error){        //定制消息
        echo"<center>$error</center>";
        exit;
    }
}
?>

<?php
// 测试程序
      $pg=new pages();
      $pg->getconnect("dsn","user","password");
      $pg->gettotal("select count(*) as total from bul_file");            //连学生表求总数
      $pg->getlist($sql,3,$page);
      if($pg->getnums()!=0){
         for($i=0;$i<$pg->getnums();$pg->getfetch_row($pg->dlist),$i++);        //同上
      }
      echo "<table width=/"400/" border=1 cellspacing=/"0/" cellpadding=/"0/" bordercolordark=/"#ffffff/" bordercolorlight=/"#000000/">";
      echo $pg->getfanye();
      echo "</td></tr></table>";
      echo "<table width=/"400/" border=/"1/" cellspacing=/"0/" cellpadding=/"0/" bordercolordark=/"#ffffff/" bordercolorlight=/"#000000/">";
      echo "<tr bgcolor=/"#ccff99/"><td width=/"5%/"><font face=/"隶书/" size=/"4/"><div align=/"center/">id</div></font></td>      <td width=/"50%/"><font face=/"隶书/" size=/"4/"><div align=/"center/">标题</div></font></td>        <td width=/"30%/"><font face=/"隶书/" size=/"4/"><div align='center'>日期</div></font></td>       </tr>/";
        $i=1;
      while($pg->getfetch_row($pg->dlist)){
           $pg->getnums();
           echo "<tr><td width=/"5%/">".($pg->nums+$i)."</a></td><td width=/"50%/"><div align='center'><a href=/"list_bul.php?id=".$pg->getresult($pg->dlist,1)."/" target=/"left/">".$pg->getresult($pg->dlist,2)."</a></div></td><td width=/"30%/"><div align='center'>".substr($pg->getresult($pg->dlist,4),1,10)."</div></td></tr>";
           if($i==$pg->getonepage()){        //跳出循环
                break;
       }
      $i++;
?>

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