php 多风格的分页类(支持ajax分页)
- <?php
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- class page
- {
-
-
-
- var $page_name="PB_page";
- var $next_page='>';
- var $pre_page='<';
- var $first_page='First';
- var $last_page='Last';
- var $pre_bar='<<';
- var $next_bar='>>';
- var $format_left='[';
- var $format_right=']';
- var $is_ajax=false;
-
-
-
-
- var $pagebarnum=10;
- var $totalpage=0;
- var $ajax_action_name='';
-
- var $nowindex=1;
- var $url="";
- var $offset=0;
-
-
-
-
-
-
- function page($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__,$perpage.' is not
- a positive integer!');
- if(!emptyempty($array['page_name']))$this->set('page_name',$array['page_name']);
- pagename
- $this->_set_nowindex($nowindex);
- $this->_set_url($url);
- $this->totalpage=ceil($total/$perpage);
- $this->offset=($this->nowindex-1)*$perpage;
- if(!emptyempty($array['ajax']))$this->open_ajax($array['ajax']);
- }
-
-
-
-
-
-
- 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!");
- }
- }
-
-
-
-
-
- function open_ajax($action)
- {
- $this->is_ajax=true;
- $this->ajax_action_name=$action;
- }
-
-
-
-
-
-
- function next_page($style='')
- {
- if($this->nowindex<$this->totalpage){
- return $this->_get_link($this->_get_url($this->nowindex+1),$this-
- >next_page,$style);
- }
- return '<span class=".$style.">'.$this->next_page.'</span>';
- }
-
-
-
-
-
-
- function pre_page($style='')
- {
- if($this->nowindex>1){
- return $this->_get_link($this->_get_url($this->nowindex-1),$this-
- >pre_page,$style);
- }
- return '<span class=".$style.">'.$this->pre_page.'</span>';
- }
-
-
-
-
-
- function first_page($style='')
- {
- if($this->nowindex==1){
- return '<span class=".$style.">'.$this->first_page.'</span>';
- }
- return $this->_get_link($this->_get_url(1),$this->first_page,$style);
- }
-
-
-
-
-
- function last_page($style='')
- {
- if($this->nowindex==$this->totalpage){
- return '<span class=".$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;
- }
-
-
-
-
-
- function 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;
- }
-
-
-
-
-
- function offset()
- {
- return $this->offset;
- }
-
-
-
-
-
-
- function show($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='下一页';
- $this->pre_page='上一页';
- return $this->pre_page().$this->nowbar().$this->next_page();
- break;
- case '5':
- return $this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page
- ().$this->next_bar();
- break;
- }
- }
-
-
-
-
-
-
-
- function _set_url($url="")
- {
- if(!emptyempty($url)){
-
- $this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";
- }else{
-
- if(emptyempty($_SERVER['QUERY_STRING'])){
-
- $this->url=$_SERVER['REQUEST_URI']."?".$this->page_name."=";
- }else{
-
- if(stristr($_SERVER['QUERY_STRING'],$this->page_name.'=')){
-
- $this->url=str_replace($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'].'&'.$this->page_name.'=';
- }
- }
- }
- }
-
-
-
-
- function _set_nowindex($nowindex)
- {
- if(emptyempty($nowindex)){
-
- if(isset($_GET[$this->page_name])){
- $this->nowindex=intval($_GET[$this->page_name]);
- }
- }else{
-
- $this->nowindex=intval($nowindex);
- }
- }
-
-
-
-
-
-
- function _get_url($pageno=1)
- {
- return $this->url.$pageno;
- }
-
-
-
-
-
-
-
- function _get_text($str)
- {
- return $this->format_left.$str.$this->format_right;
- }
-
-
-
- function _get_link($url,$text,$style=''){
- $style=(emptyempty($style))?'':'class="'.$style.'"';
- if($this->is_ajax){
-
- return '<a '.$style.' href="网页特效:'.$this-
- >ajax_action_name.'(''.$url.'')">'.$text.'</a>';
- }else{
- return '<a '.$style.' href="'.$url.'">'.$text.'</a>';
- }
- }
-
-
-
- function error($function,$errormsg)
- {
- die('Error in file <b>'.__FILE__.'</b> ,Function <b>'.$function.'()</b>
- :'.$errormsg);
- }
- }
- $page=new page(array('total'=>1000,'perpage'=>20));
- echo 'mode:1<br>'.$page->show();
- echo '<hr>mode:2<br>'.$page->show(2);
- echo '<hr>mode:3<br>'.$page->show(3);
- echo '<hr>mode:4<br>'.$page->show(4);
- echo '<hr>开始AJAX模式:';
- $ajaxpage=new page(array
- ('total'=>1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));
- echo 'mode:1<br>'.$ajaxpage->show();
- ?>
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