复制代码 代码如下:
<?php
/**

作者：潇湘博客

时间：
2009-11-26

php技术群：
37304662

使用方法：
include_once'Pager.class.php';
$pager=new Pager();
if(isset($_GET['page']))
$pager->setCurrentPage($_GET['page']);
else
$pager->setCurrentPage(1);

$pager->setRecorbTotal(1000);
$pager->setBaseUri("page.php?");
echo $pager->execute();

**/
class Pager{
/**
*int总页数
**/
protected $pageTotal;
/**
*int
**/
protected $previous;
/**
*int
**/
protected $next;
/**
*int中间页起始序号
**/
protected $startPage;
/**
*int中间页终止序号
**/
protected $endPage;
/**
*int记录总数
**/
protected $recorbTotal;
/**
*int每页显示记录数
**/
protected $pageSize;
/**
*int当前显示页
**/
protected $currentPage;
/**
*string基url地址
**/
protected $baseUri;

/**
*@returnstring获取基url地址
*/
public function getBaseUri(){
return$this->baseUri;
}

/**
*@returnint获取当前显示页
*/
public function getCurrentPage(){
return $this->currentPage;
}

/**
*@returnint获取每页显示记录数
*/
public function getPageSize(){
return $this->pageSize;
}

/**
*@returnint获取记录总数
*/
public function getRecorbTotal(){
return$this->recorbTotal;
}

/**
*@paramstring$baseUri设置基url地址
*/
public function setBaseUri($baseUri){
$this->baseUri=$baseUri;
}

/**
*@paramint$currentPage设置当前显示页
*/
public function setCurrentPage($currentPage){
$this->currentPage=$currentPage;
}

/**
*@paramint$pageSize设置每页显示记录数
*/
public function setPageSize($pageSize){
$this->pageSize=$pageSize;
}

/**
*@paramint$recorbTotal设置获取记录总数
*/
public function setRecorbTotal($recorbTotal){
$this->recorbTotal=$recorbTotal;
}

/**
*构造函数
**/
public function __construct()
{
$this->pageTotal=0;
$this->previous=0;
$this->next=0;
$this->startPage=0;
$this->endPage=0;

$this->pageSize=20;
$this->currentPage=0;
}

/**
*分页算法
**/
private function arithmetic(){
if($this->currentPage<1)
$this->currentPage=1;

$this->pageTotal=floor($this->recorbTotal/$this->pageSize)+($this->recorbTotal%$this->pageSize>0?1:0);

if($this->currentPage>1&&$this->currentPage>$this->pageTotal)
header('location:'.$this->baseUri.'page='.$this->pageTotal);

$this->next=$this->currentPage+1;
$this->previous=$this->currentPage-1;

$this->startPage=($this->currentPage+5)>$this->pageTotal?$this->pageTotal-10:$this->currentPage-5;
$this->endPage=$this->currentPage<5?11:$this->currentPage+5;

if($this->startPage<1)
$this->startPage=1;

if($this->pageTotal<$this->endPage)
$this->endPage=$this->pageTotal;
}

/**
*分页样式
**/


protected function pageStyle(){
$result="共".$this->pageTotal."页";

if($this->currentPage>1)
$result.="<a href=/"".$this->baseUri."page=1/"><font style=/"font-family:webdings/">第1页</font></a> <a href=/"".$this->baseUri."page=$this->previous/"><fontstyle=/"font-family:webdings/">前一页</font></a>";
else
$result.="<font style=/"font-family:webdings/">第1页</font> <font style=/"font-family:webdings/"></font>";

for($i=$this->startPage;$i<=$this->endPage;$i++){
if($this->currentPage==$i)
$result.="<font color=/"#ff0000/">$i</font>";
else
$result.=" <a href=/"".$this->baseUri."page=$i/">$i</a> ";
}

if($this->currentPage!=$this->pageTotal){
$result.="<a href=/"".$this->baseUri."page=$this->next/"><font style=/"font-family:webdings/">后一页</font></a> ";
$result.="<a href=/"".$this->baseUri."page=$this->pageTotal/"><font style=/"font-family:webdings/">最后1页</font></a>";
}else{
$result.="<font style=/"font-family:webdings/">最后1页</font> <font style=/"font-family:webdings/"></font>";
}
return $result;
}



/**
*执行分页
**/
public function execute(){
if($this->baseUri!=""&&$this->recorbTotal==0)
return"";
$this->arithmetic();
return $this->pageStyle();
}
}
?>

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