初出茅庐的分页封装-

<?php
   class Page
   {
       var $table;//表名
       var $counts;//总条数
       var $pagesize;//每页的条数
       var $pages;//总页数
       var $page;//当前页
       var $first;//第一个
       var $uppage;//上一页
       var $downpage;//下一页
       function __construct($tables,$size)
       {
           $this->table=$tables;
           $this->pagesize=$size;
           $sql="select * from ".$this->table." ";
           $query=mysql_query($sql);
           $row=mysql_num_rows($query);
           $this->counts=$row;
           $this->pages=ceil($this->counts/$this->pagesize);
           $this->page=isset($_GET['page'])?$_GET['page']:1;
           $this->first=($this->page-1)*$this->pagesize;
           $this->uppage=$this->page-1;
           $this->downpage=$this->page+1;
       }
       function get_rows()
       {
           $sql2="select * from ".$this->table." limit ".$this->first.",".$this->pagesize."";
           $query2=mysql_query($sql2);
           $data=array();
           while($rows=mysql_fetch_array($query2))
           {
               $data[]=$rows;
           }
           return $data;
       }　　

　function show_item()
       {
           if($this->uppage<1)
           {
               $this->uppage=1;
           }
           if($this->downpage>$this->pages)
           {
               $this->downpage=$this->pages;
           }
           $div="<a href="?page=1">首页</a>
           <a href="?page=".$this->uppage."">上一页</a>
           <a href="?page=".$this->downpage."">下一页</a>
           <a href="?page=".$this->pages."">尾页</a>";

return $div;
}