超好用php分页类及调用方法

<?php
/**
* php分页类代码
* edit: www.jb200.com
*/
class Page { 
  private $total;  //总记录 
  private $pagesize;//每页显示多少条 
  private $limit;  //limit 
  private $page;   //当前页码 
  private $pagenum;  //总页码 
  private $url;   //地址 
  private $bothnum;  //两边保持数字分页的量 

  //构造方法初始化 
  public function __construct($_total, $_pagesize) { 
 $this->total = $_total ? $_total : 1; 
 $this->pagesize = $_pagesize; 
 $this->pagenum = ceil($this->total / $this->pagesize); 
 $this->page = $this->setPage(); 
 $this->limit = "LIMIT ".($this->page-1)*$this->pagesize.",$this->pagesize"; 
 $this->url = $this->setUrl(); 
 $this->bothnum = 2; 
} 

//拦截器 
private function __get($_key) { 
 return $this->$_key; 
} 

//获取当前页码 
private function setPage() { 
if (!empty($_GET['page'])) { 
if ($_GET['page'] > 0) { 
   if ($_GET['page'] > $this->pagenum) { 
  return $this->pagenum; 
   } else { 
  return $_GET['page']; 
   } 
} else { 
   return 1; 
} 
 } else { 
return 1; 
 } 
}  

//获取地址 
private function setUrl() { 
$_url = $_SERVER["REQUEST_URI"]; 
$_par = parse_url($_url); 
if (isset($_par['query'])) { 
parse_str($_par['query'],$_query); 
unset($_query['page']); 
$_url = $_par['path'].'?'.http_build_query($_query); 
 } 
 return $_url; 
} //数字目录 
private function pageList() { 
for ($i=$this->bothnum;$i>=1;$i--) { 
$_page = $this->page-$i; 
if ($_page < 1) continue; 
$_pagelist .= ' <a href="'.$this->url.'&page='.$_page.'">'.$_page.'</a> '; 
 } 
 $_pagelist .= ' <span class="me">'.$this->page.'</span> '; 
 for ($i=1;$i<=$this->bothnum;$i++) { 
$_page = $this->page+$i; 
if ($_page > $this->pagenum) break; 
$_pagelist .= ' <a href="'.$this->url.'&page='.$_page.'">'.$_page.'</a> '; 
 } 
 return $_pagelist; 
  } 

  //首页 
  private function first() { 
 if ($this->page > $this->bothnum+1) { 
return ' <a href="'.$this->url.'">1</a> ...'; 
 } 
  } 

  //上一页 
  private function prev() { 
 if ($this->page == 1) { 
return '<span class="disabled">上一页</span>'; 
 } 
 return ' <a href="'.$this->url.'&page='.($this->page-1).'">上一页</a> '; 
  } 

  //下一页 
  private function next() { 
 if ($this->page == $this->pagenum) { 
return '<span class="disabled">下一页</span>'; 
 } 
 return ' <a href="'.$this->url.'&page='.($this->page+1).'">下一页</a> '; 
  } 

  //尾页 
  private function last() { 
 if ($this->pagenum - $this->page > $this->bothnum) { 
return ' ...<a href="'.$this->url.'&page='.$this->pagenum.'">'.$this->pagenum.'</a> '; 
 } 
} 

//分页信息 
 public function showpage() { 
 $_page .= $this->first(); 
 $_page .= $this->pageList(); 
 $_page .= $this->last(); 
 $_page .= $this->prev(); 
 $_page .= $this->next(); 
 return $_page; 
  } 
} 
?> 

<?php 
$_page = new Page($_total,$_pagesize); //其中 $_total 是数据集的总条数,$_pagesize 是每页显示的数量. 
?>