
/**
* filename: ext_page.class.php
* @package:phpbean
* @author :feifengxlq
* @copyright :Copyright 2006 feifengxlq
* @license:version 2.0
* @create:2006-5-31
* @modify:2006-6-1
* @modify:feifengxlq 2006-11-4
* description:超强分页类,四种分页模式,默认采用类似baidu,google的分页风格。
* 2.0增加功能:支持自定义风格,自定义样式,同时支持PHP4和PHP5,
* to see detail,please visit [url=http://www.phpobject.net/blog/read.php]http://www.phpobject.net/blog/read.php[/url]?
* example:
* 模式四种分页模式:
require_once('../libs/classes/page.class.php');
$page=new page(array('total'=>1000,'perpage'=>20));
echo 'mode:1
echo '
echo '
echo '
开启AJAX:
$ajaxpage=new page(array('total'=>1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));
echo 'mode:1
采用继承自定义分页显示模式:
demo:http://www.phpobject.net/blog
*/
class page
{
/**
* config ,public
*/
var $page_name="PB_page";//page标签,用来控制url页。比如说xxx.php?PB_page=2中的PB_page
var $next_page='>';//下一页
var $pre_page='';//上一页
var $first_page='First';//首页
var $last_page='Last';//尾页
var $pre_bar='';//上一分页条
var $next_bar='>>';//下一分页条
var $format_left='[';
var $format_right=']';
var $is_ajax=false;//是否支持AJAX分页模式
/**
* private
*
*/
var $pagebarnum=10;//控制记录条的个数。
var $totalpage=0;//总页数
var $ajax_action_name='';//AJAX动作名
var $nowindex=1;//当前页
var $url="";//url地址头
var $offset=0;
/**
* constructor构造函数
*
* @param array $array['total'],$array['perpage'],$array['nowindex'],$array['url'],$array['ajax']
*/
function page($array)
{
if(is_array($array)){
if(!array_key_exists('total',$array))$this->error(__FUNCTION__,'need a param of total');
$total=intval($array['total']);
$perpage=(array_key_exists('perpage',$array))?intval($array['perpage']):10;
$nowindex=(array_key_exists('nowindex',$array))?intval($array['nowindex']):'';
$url=(array_key_exists('url',$array))?$array['url']:'';
}else{
$total=$array;
$perpage=10;
$nowindex='';
$url='';
}
if((!is_int($total))||($total0))$this->error(__FUNCTION__,$total.' is not a positive integer!');
if((!is_int($perpage))||($perpage0))$this->error(__FUNCTION__,$perpage.' is not a positive integer!');
if(!empty($array['page_name']))$this->set('page_name',$array['page_name']);//设置pagename
$this->_set_nowindex($nowindex);//设置当前页
$this->_set_url($url);//设置链接地址
$this->totalpage=ceil($total/$perpage);
$this->offset=($this->nowindex-1)*$this->perpage;
if(!empty($array['ajax']))$this->open_ajax($array['ajax']);//打开AJAX模式
}
/**
* 设定类中指定变量名的值,如果改变量不属于这个类,将throw一个exception
*
* @param string $var
* @param string $value
*/
function set($var,$value)
{
if(in_array($var,get_object_vars($this)))
$this->$var=$value;
else {
$this->error(__FUNCTION__,$var." does not belong to PB_Page!");
}
}
/**
* 打开倒AJAX模式
*
* @param string $action 默认ajax触发的动作。
*/
function open_ajax($action)
{
$this->is_ajax=true;
$this->ajax_action_name=$action;
}
/**
* 获取显示"下一页"的代码
*
* @param string $style
* @return string
*/
function next_page($style='')
{
if($this->nowindex$this->totalpage){
return $this->_get_link($this->_get_url($this->nowindex+1),$this->next_page,$style);
}
return ''.$style.'">'.$this->next_page.'';
}
/**
* 获取显示“上一页”的代码
*
* @param string $style
* @return string
*/
function pre_page($style='')
{
if($this->nowindex>1){
return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style);
}
return ''.$style.'">'.$this->pre_page.'';
}
/**
* 获取显示“首页”的代码
*
* @return string
*/
function first_page($style='')
{
if($this->nowindex==1){
return ''.$style.'">'.$this->first_page.'';
}
return $this->_get_link($this->_get_url(1),$this->first_page,$style);
}
/**
* 获取显示“尾页”的代码
*
* @return string
*/
function last_page($style='')
{
if($this->nowindex==$this->totalpage){
return ''.$style.'">'.$this->last_page.'';
}
return $this->_get_link($this->_get_url($this->totalpage),$this->last_page,$style);
}
function nowbar($style='',$nowindex_style='')
{
$plus=ceil($this->pagebarnum/2);
if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);
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