PHP分页类集锦

<?php
/**
分页类
修改:Silence
Creatdate:2006-5-30
LastModify:2009-5-31
使用方法
$page = new page ( $result, 20 ); //$result为返回记录集数组 ,20为返回每页条数
$index = $page->GetIndexBar () . $page->GetPageInfo ();
print_r ( $result );
echo "<br><br>";
echo "<center>".$index."</center>";
*/
class Page {
private $mTotalRowsNum = 0; // 总信息行数
private $mCurPageNumber = 1; // 当前所在页
private $mTotalPagesNum = 1; // 总页数
private $mQueryString; // 页面传递的数据(url?后的字符串)
private $mPageRowsNum = 20; // 每页显示行数
private $mIndexBarLength = 11; // 索引条的页数
private $mIndexBar = ''; // 页码索引条
private $mPageInfo = ''; // 分页信息
// 页码索引条样式
private $mNextButton = "<font style="font-family:webdings">8</font>";
private $mPreButton = "<font style="font-family:webdings">7</font>";
private $mFirstButton = "<font style="font-family:webdings">9</font>";
private $mLastButton = "<font style="font-family:webdings">:</font>";
private $mCssIndexBarCurPage = "font-weight:bold;color:#FF0000";
private $mCssIndexBarPage = '';
// 分页信息样式
private $mCssPageInfoNumFont = 'color:#FF0000';
private $mCssPageInfoFont = '';
// 构造方法
public function __construct(&$rSqlQuery, $userPageRowsNum = '') {
if (! is_array ( $rSqlQuery )) {
$this->SetDbPageBreak ( $rSqlQuery, $userPageRowsNum );
} else {
$this->SetArrayPageBreak ( $rSqlQuery, $userPageRowsNum );
}
}
// 设置数据库型分页
private function SetDbPageBreak(&$rSqlQuery, $userPageRowsNum = '') {
$this->SetDbTotalRowsNum ( $rSqlQuery );
$this->SetTotalPagesNum ( $userPageRowsNum );
if ($this->mTotalPagesNum > 1) {
$this->SetCurPageNumber ();
$this->SetSqlQuery ( $rSqlQuery );
$this->SetQueryString ();
$this->SetIndexBar ();
$this->SetPageInfo ();
}
}
// 设置数组型分页
private function SetArrayPageBreak(&$rArray, $userPageRowsNum = '', $userTotalRowsNum = '') {
$this->SetArrayTotalRowsNum ( $rArray, $userTotalRowsNum );
$this->SetTotalPagesNum ( $userPageRowsNum );
if ($this->mTotalPagesNum > 1) {
$this->SetCurPageNumber ();
$this->SetArray ( $rArray );
$this->SetQueryString ();
$this->SetIndexBar ();
$this->SetPageInfo ();
}
}
// 数据库型计算总行数
private function SetDbTotalRowsNum($rSqlQuery) {
$this->mTotalRowsNum = mysql_num_rows ( mysql_query ( $rSqlQuery ) );
}
// 数组型计算总行数
private function SetArrayTotalRowsNum($array) {
$this->mTotalRowsNum = count ( $array );
}
// 计算总页数
private function SetTotalPagesNum($userPageRowsNum = '') {
if ($userPageRowsNum) {
$this->mPageRowsNum = $userPageRowsNum;
}
$this->mTotalPagesNum = ( int ) (floor ( ($this->mTotalRowsNum - 1) / $this->mPageRowsNum ) + 1);
}
// 计算当前页数
private function SetCurPageNumber() {
if ($_GET ['page']) {
$this->mCurPageNumber = $_GET ['page'];
}
}
// 修正Sql截取语句
private function SetSqlQuery(&$rSqlQuery) {
$start_number = ($this->mCurPageNumber - 1) * $this->mPageRowsNum;
$rSqlQuery .= " LIMIT " . $start_number . "," . $this->mPageRowsNum;
}
// 修正截取后的Array
private function SetArray(&$rArray) {
$start_number = ($this->mCurPageNumber - 1) * $this->mPageRowsNum;
$rArray = array_slice ( $rArray, $start_number, $this->mPageRowsNum );
}
// 修正 $_GET 传递数据
private function SetQueryString() {
$query_string = $_SERVER ['QUERY_STRING'];
if ($query_string == '') {
$this->mQueryString = "?page=";
} else {
$this->mQueryString = preg_replace ( "/&?page=d+/", '', $query_string );
$this->mQueryString = "?" . $this->mQueryString . "&page=";
}
}
// 设置页码索引条
private function GetPageIndex() {
if ($this->mTotalPagesNum <= $this->mIndexBarLength) {
$first_number = 1;
$last_number = $this->mTotalPagesNum;
} else {
$offset = ( int ) floor ( $this->mIndexBarLength / 2 );
if (($this->mCurPageNumber - $offset) <= 1) {
$first_number = 1;
} elseif (($this->mCurPageNumber + $offset) > $this->mTotalPagesNum) {
$first_number = $this->mTotalPagesNum - $this->mIndexBarLength + 1;
} else {
$first_number = $this->mCurPageNumber - $offset;
}
$last_number = $first_number + $this->mIndexBarLength - 1;
}
$last_number;
for($i = $first_number; $i <= $last_number; $i ++) {
if ($this->mCurPageNumber == $i) {
$page_index .= "<font style='" . $this->mCssIndexBarCurPage . "'>" . $i . "</font> ";
} else {
$page_index .= " <a href='" . $this->mQueryString . $i . "' style='" . $this->mCssIndexBarPage . "'>" . $i . "</a> ";
}
}
return $page_index;
}
// 设置页码索引条
private function SetIndexBar() {
$this->mIndexBar = $this->GetNavFirstButton ();
$this->mIndexBar .= $this->GetNavPreButton ();
$this->mIndexBar .= $this->GetPageIndex ();
$this->mIndexBar .= $this->GetNavNextButton ();
$this->mIndexBar .= $this->GetNavLastButton ();
}
// 得到页码索引条 首页按钮
private function GetNavFirstButton() {
return "<a href='" . $this->mQueryString . "1'>" . $this->mFirstButton . "</a> ";
}
// 得到页码索引条 上一页按钮
private function GetNavPreButton() {
if ($this->mCurPageNumber > 1) {
$pre_number = $this->mCurPageNumber - 1;
} else {
$pre_number = 1;
}
return "<a href='" . $this->mQueryString . $pre_number . "'>" . $this->mPreButton . "</a> ";
}
// 得到页码索引条 下一页按钮
private function GetNavNextButton() {
if ($this->mCurPageNumber < $this->mTotalPagesNum) {
$next_number = $this->mCurPageNumber + 1;
} else {
$next_number = $this->mTotalPagesNum;
}
return "<a href='" . $this->mQueryString . $next_number . "'>" . $this->mNextButton . "</a> ";
}
// 得到页码索引条 末页按钮
private function GetNavLastButton() {
return "<a href='" . $this->mQueryString . $this->mTotalPagesNum . "'>" . $this->mLastButton . "</a> ";
}
// 设置分页信息
private function SetPageInfo() {
$this->mPageInfo = "<font style='" . $this->mCssPageInfoFont . "'>";
$this->mPageInfo .= "共 <font style='" . $this->mCssPageInfoNumFont . "'>" . $this->mTotalRowsNum . "</font> 条信息 | ";
$this->mPageInfo .= "<font style='" . $this->mCssPageInfoNumFont . "'>" . $this->mPageRowsNum . "</font> 条/页 | ";
$this->mPageInfo .= "共 <font style='" . $this->mCssPageInfoNumFont . "'>" . $this->mTotalPagesNum . "</font> 页 | ";
$this->mPageInfo .= "第 <font style='" . $this->mCssPageInfoNumFont . "'>" . $this->mCurPageNumber . "</font> 页";
$this->mPageInfo .= "</font>";
}
// 取出页码索引条
public function GetIndexBar() {
return $this->mIndexBar;
}
// 取出分页信息
public function GetPageInfo() {
return $this->mPageInfo;
}
//释放类
function __destruct() {
}
}
?>

<?php
/*
* Created on 2007-6-8
* Programmer : Alan , Msn - [email protected]
* KeBeKe.com Develop a project PHP - MySQL - Apache
* Window - Preferences - PHPeclipse - PHP - Code Templates
*/
//为了避免重复包含文件而造成错误，加了判断函数是否存在的条件：
if(!function_exists(pageft)){
//定义函数pageft(),三个参数的含义为：
//$totle：信息总数；
//$displaypg：每页显示信息数，这里设置为默认是20；
//$url：分页导航中的链接，除了加入不同的查询信息“page”外的部分都与这个URL相同。
//　　　默认值本该设为本页URL（即$_SERVER["REQUEST_URI"]），但设置默认值的右边只能为常量，所以该默认值设为空字符串，在函数内部再设置为本页URL。
function pageft($totle,$displaypg=20,$url=''){
//定义几个全局变量：
//$page：当前页码；
//$firstcount：（数据库）查询的起始项；
//$pagenav：页面导航条代码，函数内部并没有将它输出；
//$_SERVER：读取本页URL“$_SERVER["REQUEST_URI"]”所必须。
global $page,$firstcount,$pagenav,$_SERVER;
//为使函数外部可以访问这里的“$displaypg”，将它也设为全局变量。注意一个变量重新定义为全局变量后，原值被覆盖，所以这里给它重新赋值。
$GLOBALS["displaypg"]=$displaypg;
if(!$page) $page=1;
//如果$url使用默认，即空值，则赋值为本页URL：
if(!$url){ $url=$_SERVER["REQUEST_URI"];}
//URL分析：
$parse_url=parse_url($url);
$url_query=$parse_url["query"]; //单独取出URL的查询字串
if($url_query){
//因为URL中可能包含了页码信息，我们要把它去掉，以便加入新的页码信息。
//这里用到了正则表达式，请参考“PHP中的正规表达式”
$url_query=ereg_replace("(^|&)page=$page","",$url_query);
//将处理后的URL的查询字串替换原来的URL的查询字串：
$url=str_replace($parse_url["query"],$url_query,$url);
//在URL后加page查询信息，但待赋值：
if($url_query) $url.="&page"; else $url.="page";
}else {
$url.="?page";
}
//页码计算：
$lastpg=ceil($totle/$displaypg); //最后页，也是总页数
$page=min($lastpg,$page);
$prepg=$page-1; //上一页
$nextpg=($page==$lastpg ? 0 : $page+1); //下一页
$firstcount=($page-1)*$displaypg;
//开始分页导航条代码：
$pagenav="显示第 <B>".($totle?($firstcount+1):0)."</B>-<B>".min($firstcount+$displaypg,$totle)."</B> 条记录，共 $totle 条记录";
//如果只有一页则跳出函数：
if($lastpg<=1) return false;
$pagenav.=" <a href='$url=1'>首页</a> ";
if($prepg) $pagenav.=" <a href='$url=$prepg'>前页</a> "; else $pagenav.=" 前页 ";
if($nextpg) $pagenav.=" <a href='$url=$nextpg'>后页</a> "; else $pagenav.=" 后页 ";
$pagenav.=" <a href='$url=$lastpg'>尾页</a> ";
//下拉跳转列表，循环列出所有页码：
$pagenav.="　到第 <select name='topage' size='1' onchange='window.location="$url="+this.value'>n";
for($i=1;$i<=$lastpg;$i++){
if($i==$page) $pagenav.="<option value='$i' selected>$i</option>n";
else $pagenav.="<option value='$i'>$i</option>n";
}
$pagenav.="</select> 页，共 $lastpg 页";
}
}

//-------------------------具体演示举例-------------------------------
/*
//（前面程序略）
include("pageft.php"); //包含“pageft.php”文件
//取得总信息数
$result=mysql_query("select * from mytable");
$total=mysql_num_rows($result);
//调用pageft()，每页显示10条信息（使用默认的20时，可以省略此参数），使用本页URL（默认，所以省略掉）。
pageft($total,10);
//现在产生的全局变量就派上用场了：
$result=mysql_query("select * from mytable limit $firstcount,$displaypg ");
while($row=mysql_fetch_array($result)){
//（列表内容略）
}
//输出分页导航条代码：
echo $pagenav;
//（后面程序略）
*/
?>

<?php
class Page {
    private $total; //查询所有的数据总记录数
    private $page; //当前第几页
    private $num; //每页显示记录的条数
    private $pageNum; //一共多少页
    private $offset; //从数据库中取记录的开始偏移数
    function __construct($total, $page=1, $num=5) {
        $this->total=$total;
        $this->page=$page;
        $this->num=$num;
        $this->pageNum=$this->getPageNum();
        $this->offset=$this->getOffset();
    }
    private function getPageNum(){
        return ceil($this->total/$this->num);
    }
    private function getNextPage() {
        if($this->page==$this->pageNum)
        return false;
        else
        return $this->page+1;
    }
    private function getPrevPage() {
        if($this->page==1)
        return false;
        else
        return $this->page-1;
    }
    //数据库查询的偏移量
    private function getOffset() {
        return ($this->page-1)*$this->num;
    }
    //当前页开始的记录数
    private function getStartNum() {
        if($this->total==0)
        return 0;
        else
        return $this->offset+1;
    }
    //当前页结束的记录数
    private function getEndNum() {
        return min($this->offset+$this->num,$this->total);
    }
    public function getPageInfo(){
        $pageInfo=array(
        "row_total" => $this->total,
        "row_num" => $this->num,
        "page_num" => $this->getPageNum(),
        "current_page" => $this->page,
        "row_offset" => $this->getOffset(),
        "next_page" => $this->getNextPage(),
        "prev_page" => $this->getPrevPage(),
        "page_start" => $this->getStartNum(),
        "page_end" => $this->getEndNum()
        );
        return $pageInfo;
    }
}
?>