<!--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){
$this->cn=@odbc_connect($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
$this->d=@odbc_do($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),$this->i++);//同上
//}
//$this->i=0;//为何这部分不能封装？
return $this->dlist;
}
function getfanye(){
$str="";
if($this->page!=1)
$str.="<a href=".$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";
$str.="您正浏览第<font color=red>".$this->page."</font>页";
return $str;
}
function getnums(){
return $this->nums;
}
function getonepage(){//每页实际条数
return $this->onepage;
}
function geti(){
return $this->i;
}
function getpage(){
return $this->page;
}
function getmess($error){//定制消息
echo"<center>$error</center>";
exit;
}
}
$pg=new pages();
$pg->getconnect("lei","sa","star");
$pg->gettotal("select count(*) as total from xs"); //连学生表求总数
$pg->getlist("select xs_name from xs order by xs_id",8,$page);
if($pg->getnums()!=0){
for($i=0;$i<$pg->getnums();odbc_fetch_row($pg->dlist),$i++);//同上
}
$i=0;
while(odbc_fetch_row($pg->dlist)){
$name=odbc_result($pg->dlist,"xs_name");
echo $name."<br>";
if($i==$pg->getonepage()){//跳出循环
break;
}
$i++;
}
echo$pg->getfanye();
?>
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