经典php分页代码,支持数字偏移

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经典php分页代码,支持数字偏移

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');

出处：http://www.phpfensi.com/php/20140815/4274.html

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