新手写的分页类

代码如下：


<?php
class Pageslice{
var $pageSize;//每页显示数据条数
var $page;//当前页面
var $totalPages;//总页数
var $startNum;//strat
var $dbtable;//要查询的数据表
var $rs;//记录集


function setUnit($n){//设置每页显示数据条数
$this->pageSize=$n;
$this->getTotalPages();
$this->getPage();
}


function bindTable($tb){//绑定表
$this->dbtable = $tb;
$this->setUnit(5);//默认显示5条记录
}


function getTotalPages(){//取得总页数
$tb =$this->dbtable;
$sqlStr = "select * from ".$tb;
$rsStr = mysql_query($sqlStr);
$this->totalPages = ceil(count(mysql_fetch_row($rsStr))/$this->pageSize);
return $this->totalPages;
}


function getPage(){//得到当前页码
if(＄＿GET['page'] == NULL || abs（＄＿GET['page']) >$this->totalPages ){
$this->page = 1;
}else{
$this->page =＄＿GET['page'];
}
return $this->page;
}
function getRS(){//取记录集
$this->startNum = ($this->page-1)*$this->pageSize;
$tb = $this->dbtable;
$rs_sql = "select * from ".$tb." order by id DESC limit ". $this->startNum.",".$this->pageSize;
$this->rs = mysql_query($rs_sql);
return $this->rs;
}
function showFlip(){//显示分页控件
$page_string ="&nbsp;&nbsp;总共".$this->totalPages."页，当前第".$this->page."页&nbsp;&nbsp;";
if( $this->page == 1 ){
$page_string.="第一页|上一页|";
}else{
$page_string.= "<a href=?page=1>第一页</a>|<a href=?page=".($this->page-1).">上一页</a>|";
}
if( ($this->page == $this->totalPages) || ($this->totalPages == 0) ){
$page_string.=" 下一页|尾页";
}else{
$page_string.= "<a href=?page=".($this->page+1).">下一页</a>|<a href=?page=".$this->totalPages.">尾页</a>";
}
print $page_string;
}
}
?>[/php]
应用，假设已经建立了test表，并且已经连上
[php]$pages = new Pageslice;//建立分页对象
$pages->bindTable('test');//读取test表
//$pages->setUnit(3);//可以重新设置显示条数
$rs = $pages->getRS();
/*
.........其他代码
*/
$pages->showFlip()
//然后在需要显示分页的地方调用分页