php分页类介绍

<?php
/*
** File: class.pagenumber.php
** Class: PageNumber
** Version: none
** Created: 5/12/2004
** Author: Morgan Woo
** Email: morgan.woo@163.com
** Update:huabing lv
** Email:hb_lv@hotmail.com
**
** Copyright (c) 2004 Mr.Woo . All rights reserved.
*/

class Pager{

//生成的页码（事实上不用也行）
var $pageNumber='';

//需要分类的条目总数
var $totalItems=0;
//数据连接相关
var $conn;
var $sql;
//每页显示几个条目
var $itemsPerPage=3;

//总页数
var $totalPageNumber=0;
//当前页码！
var $currentPageNumber=1;

//一个页面显示几个页码
var $length=10;


//需要分页的url
var $url='';

function Pager($conn,$sql,$currentPageNumber,$itemsPerPage,$length,$url){
$this->currentPageNumber=$currentPageNumber;
$this->conn=$conn;
$this->sql=$sql;
$this->itemsPerPage=$itemsPerPage;
$this->length=$length;
$this->url=$url;
$this->url.=(stristr($this->url,'?')!=false)?'&':'?'; //Url里有"?"就加"&"没有就加"?"
$this->getTotalPageNumber();

}
function getTotalItems(){
//for adodb
$rs=$this->conn->Execute($this->sql);
$this->totalItems=$rs->RecordCount();
return $this->totalItems;
}
function getTotalPageNumber(){

$this->totalPageNumber=ceil($this->getTotalItems()/$this->itemsPerPage);
return $this->totalPageNumber;
}

//SQL里 LIMIT start，length 中的起始值
function getLimitStart(){
$start=($this->currentPageNumber-1)*$this->itemsPerPage;
return $start;
}
//SQL里 LIMIT start，length 中的length
function getLimitItems(){
return $this->itemsPerPage;
}
function getRsPerPage(){
$modiSQL=$this->sql." limit ".$this->getLimitStart()." ,".$this->getLimitItems();
//偶用的是adodb的说
$modiRS=$this->conn->Execute($modiSQL);
$arr=$modiRS->GetArray();
return $arr;
}

//主函数.中文分页
function getPageNumber(){
if ($this->getTotalPageNumber()>1){

$pageNumber='当前第'.$this->currentPageNumber.'页/共'.$this->totalPageNumber.'页';
//显示第一页和前一页
if ($this->currentPageNumber>1){
//第一页
//First Page
$pageNumber.="<B><A HREF=".$this->url."page=1>第一页</A> </B> ";
//前一页
//Previous Page
$pageNumber.="<B><A HREF=".$this->url."page=".($this->currentPageNumber-1).">前一页</A> </B>";
}
//The start number is the first number of all pages which show on the current page.
$startNumber=intval($this->currentPageNumber/$this->length)*$this->length;
//Prev N page
//交界处
if ($this->currentPageNumber>=$this->length){
$pageNumber.="[<B><A HREF=".$this->url."page=".($startNumber-1).">".($startNumber-1)."</A></B>]...";
}

$leftPageNumber=0;
for ($i=$startNumber;$i<=$this->totalPageNumber;$i++){
if ($i==0)continue;
if ($i-$startNumber<$this->length){
if ($i==$this->currentPageNumber){
$pageNumber.="[<b>$i</b>]";
}else{
$pageNumber.="[<A HREF=".$this->url."page=".$i.">".$i."</A>]";
}
}else{
$leftPageNumber=$this->totalPageNumber-$i+1;
break;
}
}

//显示下一个分页列表
if ($leftPageNumber>=1){
$pageNumber.="...[<B><A HREF=".$this->url."page=".($startNumber+$this->length).">".($startNumber+$this->length)."</A></B>] ";
}

if ($this->currentPageNumber!=$this->totalPageNumber){
//Next page
$pageNumber.="<B><A HREF=".$this->url."page=".($this->currentPageNumber+1).">下一页</A> </B>";
//Last page
$pageNumber.="<B><A HREF=".$this->url."page=".$this->totalPageNumber.">最后页</A> </B>";
}

$this->pageNumber=$pageNumber;
return $this->pageNumber;

}


}


//英文分页
function getPageNumber2(){
if ($this->getTotalPageNumber()>1){

$pageNumber='P'.$this->currentPageNumber.'/'.$this->totalPageNumber.'';
//显示第一页和前一页
if ($this->currentPageNumber>1){
//第一页
//First Page
$pageNumber.="<B><A HREF=".$this->url."page=1>FIRST</A> </B> ";
//前一页
//Previous Page
$pageNumber.="<B><A HREF=".$this->url."page=".($this->currentPageNumber-1).">PREV</A> </B>";
}
//The start number is the first number of all pages which show on the current page.
$startNumber=intval($this->currentPageNumber/$this->length)*$this->length;
//Prev N page
//交界处
if ($this->currentPageNumber>=$this->length){
$pageNumber.="[<B><A HREF=".$this->url."page=".($startNumber-1).">".($startNumber-1)."</A></B>]...";
}

$leftPageNumber=0;
for ($i=$startNumber;$i<=$this->totalPageNumber;$i++){
if ($i==0)continue;
if ($i-$startNumber<$this->length){
if ($i==$this->currentPageNumber){
$pageNumber.="[<b>$i</b>]";
}else{
$pageNumber.="[<A HREF=".$this->url."page=".$i.">".$i."</A>]";
}
}else{
$leftPageNumber=$this->totalPageNumber-$i+1;
break;
}
}

//显示下一个分页列表
if ($leftPageNumber>=1){
$pageNumber.="...[<B><A HREF=".$this->url."page=".($startNumber+$this->length).">".($startNumber+$this->length)."</A></B>] ";
}

if ($this->currentPageNumber!=$this->totalPageNumber){
//Next page
$pageNumber.="<B><A HREF=".$this->url."page=".($this->currentPageNumber+1).">NEXT</A> </B>";
//Last page
$pageNumber.="<B><A HREF=".$this->url."page=".$this->totalPageNumber.">LAST</A> </B>";
}

$this->pageNumber=$pageNumber;
return $this->pageNumber;

}


}

}
//$currentPageNumber=( isset($_GET['page']) ) ? intval($_GET['page']) : 1;
//include("PAGENUMBER/class.pagenumber.php");
//$pageNumber= new PageNumber($adodbConn,$sql,$currentPageNumber,10,3,3,"test.php");
//echo $pageNumber->getPageNumber2();
//echo "<br>";
//echo $pageNumber->getPageNumber();
?>