php google或baidu分页代码

<?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)
$result.="<a href=\"".$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();
}
}
?>