php分页类源码与调用示例

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 $_pagelist .= ' '.$_page.' ';
 }
 $_pagelist .= ' '.$this->page.' ';
 for ($i=1;$ibothnum;$i++) {
$_page = $this->page+$i;
if ($_page > $this->pagenum) break;
$_pagelist .= ' '.$_page.' ';
 }
 return $_pagelist;
  }

  //首页
  private function first() {
 if ($this->page > $this->bothnum+1) {
return ' 1 ...';
 }
  }

  //上一页
  private function prev() {
 if ($this->page == 1) {
return '上一页';
 }
 return ' 上一页 ';
  }

  //下一页
  private function next() {
 if ($this->page == $this->pagenum) {
return '下一页';
 }
 return ' 下一页 ';
  }

  //尾页
  private function last() {
 if ($this->pagenum - $this->page > $this->bothnum) {
return ' ...'.$this->pagenum.' ';
 }
  }

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

2，分页类调用：

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