php google或baidu分页代码

/** 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上一页
**/
protected $previous;
/**
*int下一页
**/
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)
$result.="baseUri."page=1"> baseUri."page=$this->previous">";
else
$result.=" "; for($i=$this->startPage;$i<=$this->endPage;$i++){
if($this->currentPage==$i)
$result.="";
else
$result.=" baseUri."page=$i">$i ";
} if($this->currentPage!=$this->pageTotal){
$result.="baseUri."page=$this->next"> ";
$result.="baseUri."page=$this->pageTotal">";
}else{
$result.=" ";
}
return $result;
} /**
*执行分页
**/
public function execute(){
if($this->baseUri!=""&&$this->recorbTotal==0)
return"";
$this->arithmetic();
return $this->pageStyle();
}
}
?>