超强分页类2.0发布，支持自定义风格，默认4种显示模式_php实例

超强分页类2.0发布，支持自定义风格，默认4种显示模式

看到论坛上有人求百度分页类，所以把几周前的分页类贴出来。
2.0相对1.0修正如下：
1、支持PHP4和PHP5
2、增加了对ajax分页的功能
3、优化了程序整体结构
4、增加了自定义风格的功能

代码如下：

<?  <BR>/**  <BR> * filename: ext_page.class.php  <BR> * @package:phpbean  <BR> * @author :feifengxlq  <BR> * @copyright :Copyright 2006 feifengxlq  <BR> * @license:version 2.0  <BR> * @create:2006-5-31  <BR> * @modify:2006-6-1  <BR> * @modify:feifengxlq 2006-11-4  <BR> * 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。  <BR> * 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,  <BR> * to see detail,please visit [url=http://www.phpobject.net/blog/read.php]http://www.phpobject.net/blog/read.php[/url]?  <BR> * example:  <BR> * 模式四种分页模式：  <BR>   require_once('../libs/classes/page.class.php');  <BR>   $page=new page(array('total'=>1000,'perpage'=>20));  <BR>   echo 'mode:1<br>'.$page->show();  <BR>   echo '<hr>mode:2<br>'.$page->show(2);  <BR>   echo '<hr>mode:3<br>'.$page->show(3);  <BR>   echo '<hr>mode:4<br>'.$page->show(4);  <BR>   开启AJAX：  <BR>   $ajaxpage=new page(array('total'=>1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));  <BR>   echo 'mode:1<br>'.$ajaxpage->show();  <BR>   采用继承自定义分页显示模式：  <BR>   demo:http://www.phpobject.net/blog  <BR> */  <BR>class page   <BR>{  <BR> /**  <BR>  * config ,public  <BR>  */  <BR> 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  <BR> var $next_page='>';//下一页  <BR> var $pre_page='<';//上一页  <BR> var $first_page='First';//首页  <BR> var $last_page='Last';//尾页  <BR> var $pre_bar='<<';//上一分页条  <BR> var $next_bar='>>';//下一分页条  <BR> var $format_left='[';  <BR> var $format_right=']';  <BR> var $is_ajax=false;//是否支持AJAX分页模式   <br><br> /**  <BR>  * private  <BR>  *  <BR>  */   <BR> var $pagebarnum=10;//控制记录条的个数。  <BR> var $totalpage=0;//总页数  <BR> var $ajax_action_name='';//AJAX动作名  <BR> var $nowindex=1;//当前页  <BR> var $url="";//url地址头  <BR> var $offset=0;  <br><br> /**  <BR>  * constructor构造函数  <BR>  *  <BR>  * @param array $array['total'],$array['perpage'],$array['nowindex'],$array['url'],$array['ajax']...  <BR>  */  <BR> function page($array)  <BR> {  <BR>  if(is_array($array)){  <BR>     if(!array_key_exists('total',$array))$this->error(__FUNCTION__,'need a param of total');  <BR>     $total=intval($array['total']);  <BR>     $perpage=(array_key_exists('perpage',$array))?intval($array['perpage']):10;  <BR>     $nowindex=(array_key_exists('nowindex',$array))?intval($array['nowindex']):'';  <BR>     $url=(array_key_exists('url',$array))?$array['url']:'';  <BR>  }else{  <BR>     $total=$array;  <BR>     $perpage=10;  <BR>     $nowindex='';  <BR>     $url='';  <BR>  }  <BR>  if((!is_int($total))||($totalerror(__FUNCTION__,$total.' is not a positive integer!');  <BR>  if((!is_int($perpage))||($perpageerror(__FUNCTION__,$perpage.' is not a positive integer!');  <BR>  if(!empty($array['page_name']))$this->set('page_name',$array['page_name']);//设置pagename  <BR>  $this->_set_nowindex($nowindex);//设置当前页  <BR>  $this->_set_url($url);//设置链接地址  <BR>  $this->totalpage=ceil($total/$perpage);  <BR>  $this->offset=($this->nowindex-1)*$this->perpage;  <BR>  if(!empty($array['ajax']))$this->open_ajax($array['ajax']);//打开AJAX模式  <BR> }  <BR> /**  <BR>  * 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  <BR>  *  <BR>  * @param string $var  <BR>  * @param string $value  <BR>  */  <BR> function set($var,$value)  <BR> {  <BR>  if(in_array($var,get_object_vars($this)))  <BR>     $this->$var=$value;  <BR>  else {  <BR>   $this->error(__FUNCTION__,$var." does not belong to PB_Page!");  <BR>  }  <br><br> }  <BR> /**  <BR>  * 打开倒AJAX模式  <BR>  *  <BR>  * @param string $action 默认ajax触发的动作。  <BR>  */  <BR> function open_ajax($action)  <BR> {  <BR>  $this->is_ajax=true;  <BR>  $this->ajax_action_name=$action;  <BR> }  <BR> /**  <BR>  * 获取显示"下一页"的代码  <BR>  *   <BR>  * @param string $style  <BR>  * @return string  <BR>  */  <BR> function next_page($style='')  <BR> {  <BR>  if($this->nowindextotalpage){  <BR>   return $this->_get_link($this->_get_url($this->nowindex+1),$this->next_page,$style);  <BR>  }  <BR>  return '<span class="'.$style.'">'.$this->next_page.'</span>';  <BR> }  <br><br> /**  <BR>  * 获取显示“上一页”的代码  <BR>  *  <BR>  * @param string $style  <BR>  * @return string  <BR>  */  <BR> function pre_page($style='')  <BR> {  <BR>  if($this->nowindex>1){  <BR>   return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style);  <BR>  }  <BR>  return '<span class="'.$style.'">'.$this->pre_page.'</span>';  <BR> }  <br><br> /**  <BR>  * 获取显示“首页”的代码  <BR>  *  <BR>  * @return string  <BR>  */  <BR> function first_page($style='')  <BR> {  <BR>  if($this->nowindex==1){  <BR>      return '<span class="'.$style.'">'.$this->first_page.'</span>';  <BR>  }  <BR>  return $this->_get_link($this->_get_url(1),$this->first_page,$style);  <BR> }  <br><br> /**  <BR>  * 获取显示“尾页”的代码  <BR>  *  <BR>  * @return string  <BR>  */  <BR> function last_page($style='')  <BR> {  <BR>  if($this->nowindex==$this->totalpage){  <BR>      return '<span class="'.$style.'">'.$this->last_page.'</span>';  <BR>  }  <BR>  return $this->_get_link($this->_get_url($this->totalpage),$this->last_page,$style);  <BR> }  <br><br> function nowbar($style='',$nowindex_style='')  <BR> {  <BR>  $plus=ceil($this->pagebarnum/2);  <BR>  if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);  <BR>  $begin=$this->nowindex-$plus+1;  <BR>  $begin=($begin>=1)?$begin:1;  <BR>  $return='';  <BR>  for($i=$begin;$ipagebarnum;$i++)  <BR>  {  <BR>   if($itotalpage){  <BR>    if($i!=$this->nowindex)  <BR>        $return.=$this->_get_text($this->_get_link($this->_get_url($i),$i,$style));  <BR>    else   <BR>        $return.=$this->_get_text('<span class="'.$nowindex_style.'">'.$i.'</span>');  <BR>   }else{  <BR>    break;  <BR>   }  <BR>   $return.="\n";  <BR>  }  <BR>  unset($begin);  <BR>  return $return;  <BR> }  <BR> /**  <BR>  * 获取显示跳转按钮的代码  <BR>  *  <BR>  * @return string  <BR>  */  <BR> function select()  <BR> {  <BR>  $return='';  <BR>  for($i=1;$itotalpage;$i++)  <BR>  {  <BR>   if($i==$this->nowindex){  <BR>    $return.=''.$i.'';  <BR>   }else{  <BR>    $return.=''.$i.'';  <BR>   }  <BR>  }  <BR>  unset($i);  <BR>  $return.='';  <BR>  return $return;  <BR> }  <br><br> /**  <BR>  * 获取mysql 语句中limit需要的值  <BR>  *  <BR>  * @return string  <BR>  */  <BR> function offset()  <BR> {  <BR>  return $this->offset;  <BR> }  <br><br> /**  <BR>  * 控制分页显示风格（你可以增加相应的风格）  <BR>  *  <BR>  * @param int $mode  <BR>  * @return string  <BR>  */  <BR> function show($mode=1)  <BR> {  <BR>  switch ($mode)  <BR>  {  <BR>   case '1':  <BR>    $this->next_page='下一页';  <BR>    $this->pre_page='上一页';  <BR>    return $this->pre_page().$this->nowbar().$this->next_page().'第'.$this->select().'页';  <BR>    break;  <BR>   case '2':  <BR>    $this->next_page='下一页';  <BR>    $this->pre_page='上一页';  <BR>    $this->first_page='首页';  <BR>    $this->last_page='尾页';  <BR>    return $this->first_page().$this->pre_page().'[第'.$this->nowindex.'页]'.$this->next_page().$this->last_page().'第'.$this->select().'页';  <BR>    break;  <BR>   case '3':  <BR>    $this->next_page='下一页';  <BR>    $this->pre_page='上一页';  <BR>    $this->first_page='首页';  <BR>    $this->last_page='尾页';  <BR>    return $this->first_page().$this->pre_page().$this->next_page().$this->last_page();  <BR>    break;  <BR>   case '4':  <BR>    $this->next_page='下一页';  <BR>    $this->pre_page='上一页';  <BR>    return $this->pre_page().$this->nowbar().$this->next_page();  <BR>    break;  <BR>   case '5':  <BR>    return $this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page().$this->next_bar();  <BR>    break;  <BR>  }  <br><br> }  <BR>/*----------------private function (私有方法)-----------------------------------------------------------*/  <BR> /**  <BR>  * 设置url头地址  <BR>  * @param: String $url  <BR>  * @return boolean  <BR>  */  <BR> function _set_url($url="")  <BR> {  <BR>  if(!empty($url)){  <BR>      //手动设置  <BR>   $this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";  <BR>  }else{  <BR>      //自动获取  <BR>   if(empty($_SERVER['QUERY_STRING'])){  <BR>       //不存在QUERY_STRING时  <BR>    $this->url=$_SERVER['REQUEST_URI']."?".$this->page_name."=";  <BR>   }else{  <BR>       //  <BR>    if(stristr($_SERVER['QUERY_STRING'],$this->page_name.'=')){  <BR>        //地址存在页面参数  <BR>     $this->url=str_replace($this->page_name.'='.$this->nowindex,'',$_SERVER['REQUEST_URI']);  <BR>     $last=$this->url[strlen($this->url)-1];  <BR>     if($last=='?'||$last=='&'){  <BR>         $this->url.=$this->page_name."=";  <BR>     }else{  <BR>         $this->url.='&'.$this->page_name."=";  <BR>     }  <BR>    }else{  <BR>        //  <BR>     $this->url=$_SERVER['REQUEST_URI'].'&'.$this->page_name.'=';  <BR>    }//end if      <BR>   }//end if  <BR>  }//end if  <BR> }  <br><br> /**  <BR>  * 设置当前页面  <BR>  *  <BR>  */  <BR> function _set_nowindex($nowindex)  <BR> {  <BR>  if(empty($nowindex)){  <BR>   //系统获取  <br><br>   if(isset($_GET[$this->page_name])){  <BR>    $this->nowindex=intval($_GET[$this->page_name]);  <BR>   }  <BR>  }else{  <BR>      //手动设置  <BR>   $this->nowindex=intval($nowindex);  <BR>  }  <BR> }  <br><br> /**  <BR>  * 为指定的页面返回地址值  <BR>  *  <BR>  * @param int $pageno  <BR>  * @return string $url  <BR>  */  <BR> function _get_url($pageno=1)  <BR> {  <BR>  return <strong>）本文来（源gaodai#ma#com搞@@代~&码*网2</strong><pre>搞代gaodaima码

$this->url.$pageno;
}

/**
* 获取分页显示文字，比如说默认情况下_get_text(‘1’)将返回[1]
*
* @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 ‘ajax_action_name.'(\”.$url.’\’)”>’.$text.”;
}else{
return ”.$text.”;
}
}
/**
* 出错处理方式
*/
function error($function,$errormsg)
{
die(‘Error in file ‘.__FILE__.’ ,Function ‘.$function.'() :’.$errormsg);
}
}
?>
提供一个简单的演示demo

<?  <BR>require_once('../libs/classes/page.class.php');  <BR>$page=new page(array('total'=>1000,'perpage'=>20));  <BR>echo 'mode:1<br>'.$page->show();  <BR>echo '<hr>mode:2<br>'.$page->show(2);  <BR>echo '<hr>mode:3<br>'.$page->show(3);  <BR>echo '<hr>mode:4<br>'.$page->show(4);  <BR>echo '<hr>开始AJAX模式:';  <BR>$ajaxpage=new page(array('total'=>1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));  <BR>echo 'mode:1<br>'.$ajaxpage->show();  <BR>?> 

演示地址：http://traffic02.100steps.net/52site/test/page.php

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