<?php
class page{
public $page; //当前页
public $pagenum; // 页数
public $pagesize; // 每页显示条数
public function __construct($count, $pagesize){
$this->pagenum = ceil($count/$pagesize);
$this->pagesize = $pagesize;
$this->page =(isset($_GET['p'])&&$_GET['p']>0) ? intval($_GET['p']) : 1;
}
/**
* 获得 url 后面GET传递的参数
*/
public function getUrl(){
$url = 'index.php?'.http_build_query($_GET);
$url = preg_replace('/[?,&]p=(\w)+/','',$url);
$url .= (strpos($url,"?") === false) ? '?' : '&';
return $url;
}
/**
* 获得分页HTML
*/
public function getPage(){
$url = $this->getUrl();
$start = $this->page-5;
$start=$start>0 ? $start : 1;
$end = $start+9;
$end = $end<$this->pagenum ? $end : $this->pagenum;
$pagestr = '';
if($this->page>5){
$pagestr = "<a href=".$url."p=1".">首页</a> ";
}
if($this->page!=1){
$pagestr.= "<a href=".$url."p=".($this->page-1).">上一页</a>";
}
for($i=$start;$i<=$end;$i++){
$pagestr.= "<a href=".$url."p=".$i.">".$i."</a> ";
}
if($this->page!=$this->pagenum){
$pagestr.="<a href=".$url."p=".($this->page+1).">下一页</a>";
}
if($this->page+5<$this->pagenum){
$pagestr.="<a href=".$url."p=".$this->pagenum.">尾页</a> ";
}
return $pagestr;
}
}
// 测试代码
$page = new page(100,10);
$str=$page->getPage();
echo $str;
?>
