经典php分页代码,支持数字偏移-php教程

这款php分页代码是一款完整的php mysql css的经典分页功能,很适合于大分类有像phpwindow dz等论坛效果.

CSS样式代码如下:

<style type="text/css">

</style>

PHP实例效果代码如下:

<?php
mysql_connect('localhost','root','');
mysql_select_db('news');
mysql_query('set names gbk');
$sql = mysql_query("select * from `v_char`");
$num = mysql_num_rows($sql);
include 'page.class.php';
/*参数说明：
*getpages($pagesize,$pagenum,$page,$init,$page_len);
*$pagesize 每页记录
*$pagenum 总记录数
*$page $_get[page]
*$init 数字分页最小数，默认为1，一般不用更改。
*$page_len 数字分页的数量。
*/
$model = new getpages(10,$num,$_get['page']);
$sql = "select * from `v_char` limit $model->offset,$model->pagesize";
$res = mysql_query($sql);
while($row = mysql_fetch_assoc($res))
{
echo $row['id'] . " - " . $row['name'] .'<br>';
}
//输出分页信息
echo $model->getpage();
?>
page.class.php
<?php
/*
* author：陈凯
* data：2010-09-14
*/
class getpages
{
public $pagesize; //每页记录
public $offset; //起始记录数
public $pagenum; //总记录
public $page; //当前页码
public $init; //数字分页最左边数字
public $page_len; //数字分页最右边数字
public $pages; //总页数
//初始化赋值。
function __construct($pagesize,$pagenum,$page,$init=1,$page_len=7)
{
$this->pagesize = $pagesize;//每页记录
$this->pagenum = $pagenum; //总记录
$this->page = $page;
$this->pages = ceil($this->pagenum/$this->pagesize); //总页数
if(emptyempty($this->page) || $this->page <1 || $this->page > $this->pages)$this->page=1;
$this->init = $init; //数字分页左
$this->page_len = $page_len;//数字分页右
$this->offset = ($this->page-1)*$this->pagesize;
}
//输出分页
function getpage()
{
$this->prepg = $this->page-1; //上一页
$this->nextpg= ($this->page == $this->pages) ? 0 : $this->page+1; //下一页
// if($this->pages == 1) return false; //如果只有一页跳出
$pagenav = "<span class='divs'>共 ".$this->pages."页".$this->pagenum."条</span>";
if($this->page == 1)
{
$pagenav .="<a href='#' class='div'>首页</a> ";
$pagenav .="<a href='#' class='div'>上一页</a> ";
}
else
{
$pagenav .="<a href='".$this->get_url()."=1' class='div'>首页</a> ";
$pagenav .="<a href='".$this->get_url()."=".$this->prepg."' class='div'>上一页</a> ";
}
$pagenav .= $this->getvalpage(); //数字分页
if($this->page == $this->pages)
{
$pagenav .="<a href='#' class='div'>下一页</a> ";
$pagenav .="<a href='#' class='div'>尾页</a> ";
}
else
{
$pagenav .="<a href='".$this->get_url()."=".$this->nextpg."' class='div'>下一页</a> ";
$pagenav .="<a href='".$this->get_url()."=".$this->pages."' class='div'>尾页</a> ";
}//开源代码phpfensi.com
//下拉菜单分页列表
代码如下复制代码
$pagenav .= "<select name='page' class='select' onchange='window.location.href="".$this->get_url()."="+this.value'> ";
for($i=1;$i<=$this->pages;$i++)
{
if($i == $this->page){
$pagenav .= "<option value='".$i."' selected>".$i."</option> ";
}
else
{
$pagenav .= "<option value='".$i."'>".$i."</option> ";
}
}
$pagenav.="</select> ";
return $pagenav;
}
//数字分页
function getvalpage()
{
$max_p = $this->pages;
$this->page_len = ($this->page_len%2) ? $this->page_len : $this->page_len+1; //如果为偶数便+1
$pageoffset = ($this->page_len-1)/2; //数字分页左右数量
//总页数和数字分页显示数
if($this->pages > $this->page_len)
{
//数字分页左右数量大于等于当前页面，不进行偏移
if($pageoffset>=$this->page)
{
$this->init = 1;
$max_p= $this->page_len;
}
else
{
//当前页码+左右数量大于总数量，不进行偏移
if($this->page+$pageoffset > $this->pages)
{
$this->init = $this->pages-$this->page_len+1;
}
else
{
//进行偏移，最左边当前页码 - 左右数量
$this->init = $this->page-$pageoffset;
$max_p = $this->page+$pageoffset;
}
}
}
//循环数字分页
for($i=$this->init ;$i<=$max_p;$i++)
{
//$i 等于当前页码
if($i == $this->page)
{
$pagenav .= "<a href='#' class='divsi'>".$i."</a>";
}
else
{
$pagenav .= "<a href='".$this->get_url()."=".$i."' class='div'>".$i."</a>";
}
}
return $pagenav;
}
//获取url地址
function get_url()
{
$url = $_server['request_uri'];
$parse_url = parse_url($url);
$query_url = $parse_url['query']; //取出url上的参数
if($query_url)
{
//将&page 替换为空
$query_url = ereg_replace("(^|&)page=$this->page","",$query_url);
$url = str_replace($parse_url['query'],$query_url,$url);
if($query_url)$url .= '&page';
else $url .= 'page';
}
else
{
$url .= '?page';
}
return $url;
}
}
?>

数据库代码如下:

/*
navicat mysql data transfer
source server : localhost_3306
source server version : 50051
source host : localhost:3306
source database : news
target server type : mysql
target server version : 50051
file encoding : 65001
date: 2010-03-30 00:17:08
*/
set foreign_key_checks=0;
-- ----------------------------
-- table structure for `v_char`
-- ----------------------------
drop table if exists `v_char`;
create table `v_char` (
`id` int(10) not null auto_increment,
`name` char(10) default null,
primary key (`id`)
) engine=innodb auto_increment=401 default charset=gbk;
-- ----------------------------
-- records of v_char
-- ----------------------------
insert into `v_char` values ('1', 'test1');
insert into `v_char` values ('2', 'test2');
insert into `v_char` values ('3', 'test3');
insert into `v_char` values ('4', 'test4');
insert into `v_char` values ('5', 'test5');
insert into `v_char` values ('6', 'test6');
insert into `v_char` values ('7', 'test7');
insert into `v_char` values ('8', 'test8');
insert into `v_char` values ('9', 'test9');
insert into `v_char` values ('10', 'test10');
insert into `v_char` values ('11', 'test11');
insert into `v_char` values ('12', 'test12');

经典php分页代码,支持数字偏移

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