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
$pageNumber.=”url.”page=”.($this->currentPageNumber-1).”>前一页 “;
}
//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){
$pageNumber.=”[url.”page=”.$i.”>”.$i.”]”;
}
}else{
$leftPageNumber=$this->totalPageNumber-$i+1;
break;
}
}
//显示下一个分页列表
if ($leftPageNumber>=1){
$pageNumber.=”…[url.”page=”.($this->currentPageNumber+1).”>下一页 “;
//Last page
$pageNumber.=”url.”page=1>FIRST “;
//前一页
//Previous Page
$pageNumber.=”url.”page=”.($startNumber-1).”>”.($startNumber-1).”]…”;
}
$leftPageNumber=0;
for ($i=$startNumber;$i<=$this->totalPageNumber;$i++){
if ($i==0)continue;
if ($i-$startNumber<$this->length){
if ($i==$this->currentPageNumber){
$pageNumber.=”[$i]”;
}else{
$pageNumber.=”[url.”page=”.($startNumber+$this->length).”>”.($startNumber+$this->length).”] “;
}
if ($this->currentPageNumber!=$this->totalPageNumber){
//Next page
$pageNumber.=”url.”page=”.$this->totalPageNumber.”>LAST “;
}
$this->pageNumber=$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 “
“;
//echo $pageNumber->getPageNumber();
?>
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