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超级好用的分页类本人修正版

时间：2009-04-16

来源：互联网

也是修正版

<?
/**
* filename: ext_page.class.php
* @package:phpbean
* @author :feifengxlq<feifengxlq#gmail.com><http://www.phpobject.net/>
* @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 http://www.phpobject.net/blog/read.php?
* example:
* 模式四种分页模式：
require_once('../libs/classes/page.class.php');
$page=new page(array('total'=>1000,'perpage'=>20));
echo 'mode:1 '.$page->show();
echo '<hr>mode:2 '.$page->show(2);
echo '<hr>mode:3 '.$page->show(3);
echo '<hr>mode:4 '.$page->show(4);
开启AJAX：
$ajaxpage=new page(array('total'=>1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));
echo 'mode:1 '.$ajaxpage->show();
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='|<';//首页
var $last_page='>|';//尾页
var $pre_bar='<<';//上一分页条
var $next_bar='>>';//下一分页条
var $format_left=''; //链接左装饰 var $format_left='['; //链接左装饰
var $format_right='';//链接右装饰 var $format_right=']';//链接右装饰
var $is_ajax=false;//是否支持AJAX分页模式

/**
 * private
 *
 */
var $pagebarnum=8;//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))||($total<0))$this->error(__FUNCTION__,$total.' is not a positive integer!');
 if((!is_int($perpage))||($perpage<=0))$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,$style);
 }
 return ''.$this->next_page.'';
}

function next_page_pic($style='')
{
 if($this->nowindex<$this->totalpage){
 return $this->_get_link($this->_get_url($this->nowindex+1),$this->next_page_picb,$style);
 }
 return ''.$this->next_page_pica.'';
}
/**
 * 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,$style);
 }
 return ''.$this->pre_page.'';
}

 function pre_page_pic($style='')
{
 if($this->nowindex>1){
 return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page_picb,$style);
 }
 return ''.$this->pre_page_pica.'';
}

/**
 * 获取显示“首页”的代码
 *
 * @return string
 */
function first_page($style='')
{
 if($this->nowindex==1){
 return ''.$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==$this->totalpage){
 return ''.$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);
 $begin=$this->nowindex-$plus+1;
 $begin=($begin>=1)?$begin:1;
 $return='';
 for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
 {
 if($i<=$this->totalpage){
 if($i!=$this->nowindex)
 $return.=$this->_get_text($this->_get_link($this->_get_url($i),$i,$style));
 else
 $return.=$this->_get_text(''.$i.'');
 }else{
 break;
 }
 $return.="\n";
 }
 unset($begin);
 return $return;
}
/**
 * 获取显示跳转按钮的代码
 *
 * @return string
 */
function select()
{

 if($this->is_ajax){
 //如果是使用AJAX模式 javascript:ajax_page('/Comments_data.php?PB_page=2')"
 $return='<select name="PB_Page_Select">';
 }else{
 $return='<select name="PB_Page_Select">';
 }

 //$return='<select name="PB_Page_Select">';
 for($i=1;$i<=$this->totalpage;$i++)
 {
 if($i==$this->nowindex){
 $return.='<option value="'.$i.'" selected>'.$i.'</option>';
 }else{
 $return.='<option value="'.$i.'">'.$i.'</option>';
 }
 }
 unset($i);
 $return.='</select>';
 return $return;
}

/**
 * 获取mysql 语句中limit需要的值
 *
 * @return string
 */
function offset()
{
 return $this->offset;
}

/**
 * 控制分页显示风格（你可以增加相应的风格）
 *
 * @param int $mode
 * @return string
 */
function show($mode=1)
{
 switch ($mode)
 {
 case '1':
 $this->next_page='下一页';
 $this->pre_page='上一页';
 return $this->pre_page().$this->nowbar().$this->next_page().'第'.$this->select().'页';
 break;
 case '2':
 $this->next_page='下一页';
 $this->pre_page='上一页';
 $this->first_page='首页';
 $this->last_page='尾页';
 return $this->first_page().$this->pre_page().'[第'.$this->nowindex.'页]'.$this->next_page().$this->last_page().'第'.$this->select().'页';
 break;
 case '3':
 $this->next_page='下一页';
 $this->pre_page='上一页';
 $this->first_page='首页';
 $this->last_page='尾页';
 return $this->first_page().$this->pre_page().$this->next_page().$this->last_page();
 break;
 case '4':

 $this->next_page='»';
 $this->pre_page='« ';
 return $this->pre_page().$this->nowbar($style='y',$nowindex_style='x').$this->next_page();
 break;
 case '5'://留言版翻页样式
 $this->format_left="";
 $this->format_right="";
 $this->pre_page_pica="<img src='images/prevb.gif' align='absmiddle'>";
 $this->pre_page_picb="<img src='images/prev.gif' align='absmiddle'>";
 $this->next_page_pica="<img src='images/nextb.gif' align='absmiddle'>";
 $this->next_page_picb="<img src='images/next.gif' align='absmiddle'>";

 return $this->pre_page_pic().$this->nowbar($style='y',$nowindex_style='x').$this->next_page_pic();
 break;
 case '8'://留言版翻页样式
 $this->format_left="| ";
 $this->format_right="";
 $this->pre_page_pica="<img src='prevb.gif' align='absmiddle'>";
 $this->pre_page_picb="<img src='prev.gif' align='absmiddle'>";
 $this->next_page_pica="|<img src='nextb.gif' align='absmiddle'>";
 $this->next_page_picb="|<img src='next.gif' align='absmiddle'>";

 return $this->pre_page_pic().$this->nowbar($style='',$nowindex_style='lirtxt').$this->next_page_pic();
 break;
 case '6':
 $this->next_page='下';
 $this->pre_page='上';
 $this->first_page='首';
 $this->last_page='尾';
 return $this->first_page().$this->pre_page().'['.$this->nowindex.']'.$this->next_page().$this->last_page().$this->select();
 case '7':
 return $this->first_page().$this->pre_page().$this->nowbar().$this->next_page().$this->last_page();
 break;
 }

}
/*----------------private function (私有方法)-----------------------------------------------------------*/
/**
 * 设置url头地址
 * @param: String $url
 * @return boolean
 */
function _set_url($url="")
{
 if(!empty($url)){
 //手动设置
 $this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";
 }else{
 //自动获取
 if(empty($_SERVER['QUERY_STRING'])){
 //不存在QUERY_STRING时
 $this->url=$_SERVER['REQUEST_URI']."?".$this->page_name."=";
 }else{
 //
 if(stristr($_SERVER['QUERY_STRING'],$this->page_name.'=')){
 //地址存在页面参数
 $this->url=str_replace($this->page_name.'='.$this->nowindex,'',$_SERVER['REQUEST_URI']);
 $last=$this->url[strlen($this->url)-1];
 if($last=='?'||$last=='&'){
 $this->url.=$this->page_name."=";
 }else{
 $this->url.='&'.$this->page_name."=";
 }
 }else{
 //
 $this->url=$_SERVER['REQUEST_URI'].'&'.$this->page_name.'=';
 }//end if
 }//end if
 }//end if
}

/**
 * 设置当前页面
 *
 */
function _set_nowindex($nowindex)
{
 if(empty($nowindex)){
 //系统获取

 if(isset($_GET[$this->page_name])){
 $this->nowindex=intval($_GET[$this->page_name]);
 }
 }else{
 //手动设置
 $this->nowindex=intval($nowindex);
 }
}

/**
 * 为指定的页面返回地址值
 *
 * @param int $pageno
 * @return string $url
 */
function _get_url($pageno=1)
{
 return $this->url.$pageno;
}

/**
 * 获取分页显示文字，比如说默认情况下_get_text('<a href="">1</a>')将返回[<a href="">1</a>]
 *
 * @param String $str
 * @return string $url
 */
function _get_text($str)
{
 return $this->format_left.$str.$this->format_right;
}

/**
 * 获取链接地址
*/
function _get_link($url,$text,$style=''){
 $style=(empty($style))?'':'class="'.$style.'"';
 if($this->is_ajax){
 //如果是使用AJAX模式
 return '<a '.$style.' href="javascript:'.$this->ajax_action_name.'(\''.$url.'\')">'.$text.'</a>';
 }else{
 return '<a '.$style.' href="'.$url.'">'.$text.'</a>';
 }
}
/**
 * 出错处理方式
*/
function error($function,$errormsg)
{
 die('Error in file '.__FILE__.' ,Function '.$function.'() :'.$errormsg);
}
}
?>

这个是我修正的版本一直在用 AJAX也好用哦

调用方式如下：

<?php
$where="where `lockw`='0' ";//属于哪个配置表
/*echo $where;*/
$order="order by datea desc";
$ri=0;
$num =20;
$PB_page=isset($_GET['PB_page'])?intval($_GET['PB_page']):1;//这句就是获取page=18中的page的值，假如不存在page，那么页数就是1
$offset=($PB_page-1)*$num;
$total=$db->num_rows($db->query("select * from ".$tab."news ".$where)); //查询数据的总数
require_once('../_class/page.class.php');
$page=new page(array('total'=>$total,'perpage'=>$num,));
$query = $db->query("SELECT * from ".$tab."news ".$where." ".$order." LIMIT $offset , $num");
if ($db->num_rows($query)>0){
while($thread = $db->fetch_array($query)) {

?>
.
.循环体
.
<?php }} ?>

<?php echo $page->show(2);?>

作者: joj_79 发布时间: 2009-04-16

顶个先

作者: wlxm007 发布时间: 2009-04-17

顶..学习了..

作者: huwuling922 发布时间: 2009-04-17

支持一下，谢谢分享了~~~