<?php
 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.
?>