<?php
class page
{
var $page_name="page";
var $next_page='>';//下一页
var $pre_page='<';//上一页
var $first_page='<<首页';//首页
var $last_page='尾页>>';//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 $page_webmode='';
/**
* private
*
*/
var $pagebarnum=10;//控制记录条的个数。
var $totalpage=0;//总页数
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);
$this->total=$total;
$this->offset=($this->nowindex-1)*$perpage;
}
/**
* 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!");
}
}
/**
* 获取显示"下一页"的代码
*
* @param string $style
* @return string
*/
function next_page($style='',$nowindex_style='')
{
if($this->nowindex<$this->totalpage){
return $this->_get_link($this->_get_url($this->nowindex+1),$this->next_page,$style);
}
return '<span class="'.$nowindex_style.'">'.$this->next_page.'</span>';
}
/**
* 获取显示“上一页”的代码
*
* @param string $style
* @return string
*/
function pre_page($style='',$nowindex_style='')
{
if($this->nowindex>1){
return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style);
}
return '<span class="'.$nowindex_style.'">'.$this->pre_page.'</span>';
}
/**
* 获取显示“首页”的代码
*
* @return string
*/
function first_page($style='',$nowindex_style='')
{
if($this->nowindex==1){
return '<span class="'.$nowindex_style.'">'.$this->first_page.'</span>';
}
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($style='',$nowindex_style='')
{
if($this->nowindex==$this->totalpage){
return '<span class="'.$nowindex_style.'">'.$this->last_page.'</span>';
}
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('<span class="'.$nowindex_style.'">'.$i.'</span>');
}else{
break;
}
$return.="/n";
}
unset($begin);
return $return;
}
/**
* 获取显示跳转按钮的代码
*
* @return string
*/
function select()
{
$return='<select name="PB_Page_Select" onchange="self.location.href=/''.$this->url.'/'+this.options[this.selectedIndex].value ">';
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,$style='',$nowindex_style='')
{
switch ($mode)
{
case '1':
$this->next_page='下一页';
$this->pre_page='上一页';
$this->first_page='首页';
$this->last_page='尾页';
return $this->first_page($style,$nowindex_style)." ".$this->pre_page($style,$nowindex_style)." ".$this->next_page($style,$nowindex_style)." ".$this->last_page($style,$nowindex_style).' (当前第<span style="color:#C16012; font-size:12pt;">'.$this->nowindex.'</span>页 共<span style="color:#C16012; font-size:12pt;">'.$this->totalpage.'</span>页 <span style="color:#C16012; font-size:12pt;">'.$this->total.'</span>条记录)';
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 $this->first_page($style,$nowindex_style)." ".$this->pre_page($style,$nowindex_style)." ".$this->next_page($style,$nowindex_style)." ".$this->last_page($style,$nowindex_style).' 第'.$this->select().'页 (当前第<span style="color:#C16012; font-size:12pt;">'.$this->nowindex.'</span>页 共<span style="color:#C16012; font-size:12pt;">'.$this->totalpage.'</span>页 <span style="color:#C16012; font-size:12pt;">'.$this->total.'</span>条记录)';
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 $this->pre_page($style,$nowindex_style)." ".$this->nowbar($style,$nowindex_style)." ".$this->next_page($style,$nowindex_style).' (当前第<span style="color:#C16012; font-size:12pt;">'.$this->nowindex.'</span>页 共<span style="color:#C16012; font-size:12pt;">'.$this->totalpage.'</span>页 <span style="color:#C16012; font-size:12pt;">'.$this->total.'</span>条记录)';
break;
case '4':
$this->next_page='下一页';
$this->pre_page='上一页';
return $this->pre_page($style,$nowindex_style)." ".$this->nowbar($style,$nowindex_style)." ".$this->next_page($style,$nowindex_style).' 第'.$this->select().'页 (当前第<span style="color:#C16012; font-size:12pt;">'.$this->nowindex.'</span>页 共<span style="color:#C16012; font-size:12pt;">'.$this->totalpage.'</span>页 <span style="color:#C16012; font-size:12pt;">'.$this->total.'</span>条记录)';
break;
case '5':
$this->next_page='>';
$this->pre_page='<';
$this->first_page='<<';
$this->last_page='>>';
return $this->first_page($style,$nowindex_style)." ".$this->pre_page($style,$nowindex_style)." ".$this->nowbar($style,$nowindex_style)." ".$this->next_page($style,$nowindex_style)." ".$this->last_page($style,$nowindex_style).' (当前第<span style="color:#C16012; font-size:12pt;">'.$this->nowindex.'</span>页 共<span style="color:#C16012; font-size:12pt;">'.$this->totalpage.'</span>页 <span style="color:#C16012; font-size:12pt;">'.$this->total.'</span>条记录)';
break;
case '6':
$pagehtml="<div>";
if($this->nowindex>1)
{
$pagehtml.="<span class=/"pagenum-l/"><a href=/"{$this->_get_url($this->nowindex-1)}/"><img src=/"images/page_up.gif/" /></a></span>";
}
else
{
$pagehtml.="<span class=/"pagenum-l/"><img src=/"images/page_up.gif/" /></span>";
}
$pagehtml.="<span class=/"pagenum-c/">";
$pagehtml.="<table><tr>";
$plus=ceil($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)?$begin:1;
for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
{
if($i<=$this->totalpage){
if($i!=$this->nowindex)
$pagehtml.="<td> <a href=/"{$this->_get_url($i)}/">{$i}</a> </td>";
else
$pagehtml.="<td> {$i} </td>";
}else{
break;
}
$pagehtml.="/n";
}
unset($begin);
$pagehtml.="</tr></table>";
$pagehtml.="</span>";
if($this->nowindex<$this->totalpage)
{
$pagehtml.="<span class=/"pagenum-r/"><a href=/"{$this->_get_url($this->nowindex+1)}/"><img src=/"images/page_down.gif/" /></a></span>";
}
else
{
$pagehtml.="<span class=/"pagenum-r/"><img src=/"images/page_down.gif/" /></span>";
}
$pagehtml.="</div>";
return $pagehtml;
break;
}
}
/*----------------private function (私有方法)-----------------------------------------------------------*/
/**
* 设置url头地址
* @param: String $url
* @return boolean
*/
function _set_url($url="")
{
if($this->page_webmode!="php"&&$url!=""){
$this->url=$url;
}
else{
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)
{
if($this->page_webmode=="php"||$this->page_webmode==""){
return $this->url.$pageno;
}
else{
return $this->url.(($pageno==1)?"":"_".$pageno).".".$this->page_webmode;
}
}
/**
* 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="'.$style.'"';
return '<a '.$style.' href="'.$url.'">'.$text.'</a>';
}
/**
* 出错处理方式
*/
function error($function,$errormsg)
{
die('Error in file <b>'.__FILE__.'</b> ,Function <b>'.$function.'()</b> :'.$errormsg);
}
}
?>
调用:
<?
include_once("lib/my_page_class.php");
$page=new page(array('total'=>$total,'perpage'=>$pagesize));
$pagehtml=$page->show(6,"page","curr");
echo $pagehtml;
?>
