php智能分页类代码

<?php
 //可以实现在功能变动时，连接自动更新
 class pager{
 /*
 $newPager = new pager();
 $newPager->page=1; 起始页
 $newPager->pageDisplay=5; 显示页码
 $newPager->table="product"; //数据表
 echo $newPager->outputPager(); 输出分页
 */
  
 var $page; //默认页
 var $pageDisplay;//显示页数
 var $table;//要分页的表
 var $pageNum;
 function newURL(){
 $url = $_SERVER['REQUEST_URI'];//获取URL
 $explodeUrl = explode("&p=",$url);//分解URL
 $newURL = $explodeUrl[0];
 return $newURL;
 }
 function total(){//信息数
 $sqlTable = mysql_query("select * from $this->table");
 $num = mysql_num_rows($sqlTable);
 return $num;
 }
 function pageNum(){//页数
 if($this->total()%$this->pageDisplay){
 $this->pageNum = intval($this->total()/$this->pageDisplay)+1;
 }
 else{
 $this->pageNum=$this->total()/$this->pageDisplay;
 }
 return $this->pageNum;
 }
 function page(){//下一页
 if($_GET['p']!=""){$this->page=$_GET['p']+1;}
 if($_GET['p'] >= $this->pageNum()){$this->page=$this->pageNum();}
 return $this->page;
 }
 function nextpage(){//上一页
 $next = $_GET['p']-1;
 if($next<=0){$next=0;}
 return $next;
 }
 function start(){
 $start = ($this->page()-1)*$this->pageDisplay;
 return $start;
 }
 function outputPager(){
 if($this->pageNum()>1){
 return "<div id='pageDiv'>
 <ul>
 <li><a href='".$this->newURL()."&p=0'>|首页|</a><li>
 <li><a href='".$this->newURL()."&p=".$this->nextpage()."'>|上一页|</a></li>
 <li><a href='".$this->newURL()."&p=".$this->page()."'>|下一页|</a></li>
 <li><a href='".$this->newURL()."&p=".$this->pageNum."'>|未页|</a></li>
 <li>".$this->page."/".$this->pageNum()."页</li>
 <li>共".$this->total()."项</li>
 </div>
 ";
 }
 }
 }
 class area{
  
 }
 ?>