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PHP分页类

2017-03-29 10:44 267 查看
实例演示简易通用的PHP分页类

关于php分页类,网上有无数多个例子。水平参差不齐,孰优孰劣也没有一一考量。但可以肯定的是,一定有很多优秀的代码。开源最大的好处就是能使功能不断的完善,分享也是一样的道理,众人拾柴火焰高嘛!

笔者在这里把代码贴出来,抛砖引玉。

先来看一下最终的显示效果

1 .简易php分页类.png



2 .[PHP]代码

<?php
/***********************************************
* @类名:   page
* @参数:   $myde_total - 总记录数
*          $myde_size - 一页显示的记录数
*          $myde_page - 当前页
*          $myde_url - 获取当前的url
* @功能:   分页实现
* @作者:   源码布道者
*/
class page {
private $myde_total;          //总记录数
private $myde_size;           //一页显示的记录数
private $myde_page;           //当前页
private $myde_page_count;     //总页数
private $myde_i;              //起头页数
private $myde_en;             //结尾页数
private $myde_url;            //获取当前的url
/*
* $show_pages
* 页面显示的格式,显示链接的页数为2*$show_pages+1。
* 如$show_pages=2那么页面上显示就是[首页] [上页] 1 2 3 4 5 [下页] [尾页]
*/
private $show_pages;

public function __construct($myde_total=1,$myde_size=1,$myde_page=1,$myde_url,$show_pages=2){
$this->myde_total = $this->numeric($myde_total);
$this->myde_size = $this->numeric($myde_size);
$this->myde_page = $this->numeric($myde_page);
$this->myde_page_count = ceil($this->myde_total/$this->myde_size);
$this->myde_url = $myde_url;
if($this->myde_total<0) $this->myde_total=0;
if($this->myde_page<1)  $this->myde_page=1;
if($this->myde_page_count<1) $this->myde_page_count=1;
if($this->myde_page>$this->myde_page_count) $this->myde_page=$this->myde_page_count;
$this->limit = ($this->myde_page-1)*$this->myde_size;
$this->myde_i=$this->myde_page-$show_pages;
$this->myde_en=$this->myde_page+$show_pages;
if($this->myde_i<1){
$this->myde_en=$this->myde_en+(1-$this->myde_i);
$this->myde_i=1;
}
if($this->myde_en>$this->myde_page_count){
$this->myde_i = $this->myde_i-($this->myde_en-$this->myde_page_count);
$this->myde_en=$this->myde_page_count;
}
if($this->myde_i<1)$this->myde_i=1;
}
//检测是否为数字
private function numeric($num){
if(strlen($num)){
if(!preg_match("/^[0-9]+$/",$num)){
$num=1;
}else{
$num = substr($num,0,11);
}
}else{
$num=1;
}
return $num;
}
//地址替换
private function page_replace($page){
return str_replace("{page}",$page,$this->myde_url);
}
//首页
private function myde_home(){
if($this->myde_page!=1){
return "<a href="".$this->page_replace(1)."" title="首页">首页</a>";
}else{
return "<p>首页</p>";
}
}
//上一页
private function myde_prev(){
if($this->myde_page!=1){
return "<a href="".$this->page_replace($this->myde_page-1)."" title="上一页">上一页</a>";
}else{
return "<p>上一页</p>";
}
}
//下一页
private function myde_next(){
if($this->myde_page!=$this->myde_page_count){
return "<a href="".$this->page_replace($this->myde_page+1)."" title="下一页">下一页</a>";
}else{
return"<p>下一页</p>";
}
}
//尾页
private function myde_last(){
if($this->myde_page!=$this->myde_page_count){
return "<a href="".$this->page_replace($this->myde_page_count)."" title="尾页">尾页</a>";
}else{
return "<p>尾页</p>";
}
}
//输出
public function myde_write($id='page'){
$str ="<div id="".$id."">";
$str.=$this->myde_home();
$str.=$this->myde_prev();
if($this->myde_i>1){
$str.="<p class="pageEllipsis">...</p>";
}
for($i=$this->myde_i;$i<=$this->myde_en;$i++){
if($i==$this->myde_page){
$str.="<a href="".$this->page_replace($i)."" title="第".$i."页" class="cur">$i</a>";
}else{
$str.="<a href="".$this->page_replace($i)."" title="第".$i."页">$i</a>";
}
}
if( $this->myde_en<$this->myde_page_count ){
$str.="<p class="pageEllipsis">...</p>";
}
$str.=$this->myde_next();
$str.=$this->myde_last();
$str.="<p class="pageRemark">共<b>".$this->myde_page_count.
"</b>页<b>".$this->myde_total."</b>条数据</p>";
$str.="</div>";
return $str;
}
}
?>


3 .页面代码

<?php
require_once('./page.class.php'); //分页类
$showrow = 3;//一页显示的行数
$curpage = empty($_GET['page'])?1:$_GET['page'];//当前的页,还应该处理非数字的情况
$url = "?page={page}";//分页地址,如果有检索条件 ="?page={page}&q=".$_GET['q']
//省略了链接mysql的代码,测试时自行添加
$sql = "SELECT * FROM table";
$query = mysql_query($sql);
$total = mysql_num_rows($query);//记录总条数
if(!empty($_GET['page']) && $total !=0 && $curpage > ceil($total/$showrow))
$curpage = ceil($total_rows/$showrow);//当前页数大于最后页数,取最后一页
//获取数据
$get_data = "select * from table limit ".($curpage-1)*$showrow.",$showrow;";
...
?>

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>实例演示简易通用的PHP分页类</title>
<style type="text/css">
#page{
height:40px;
padding:20px 0px;
}
#page a{
display:block;
float:left;
margin-right:10px;
padding:2px 12px;
height:24px;
border:1px #cccccc solid;
background:#fff;
text-decoration:none;
color:#808080;
font-size:12px;
line-height:24px;
}
#page a:hover{
color:#077ee3;
border:1px #077ee3 solid;
}
#page a.cur{
border:none;
background:#077ee3;
color:#fff;
}
#page p{
float:left;
padding:2px 12px;
font-size:12px;
height:24px;
line-height:24px;
color:#bbb;
border:1px #ccc solid;
background:#fcfcfc;
margin-right:8px;

}
#page p.pageRemark{
border-style:none;
background:none;
margin-right:0px;
padding:4px 0px;
color:#666;
}
#page p.pageRemark b{
color:red;
}
#page p.pageEllipsis{
border-style:none;
background:none;
padding:4px 0px;
color:#808080;
}
</style>
</head>

<body>
<div class="main">
<div class="showData">
<!--显示数据区-->
</div>
<div class="showPage">
<?php
if($total>$showrow){//总记录数大于每页显示数,显示分页
$page = new page($total,$showrow,$curpage,$url,2);
echo $page->myde_write();
}
?>
</div>
</div>
</body>
</html>


简单分页

/**
* 自定义分页方法
* @param unknown_type $url     #分页url,页码采用'%s'表示,例如:http://test.ebers.com/tags/xxx/%s/
* @param unknown_type $cur_page        #当前页码
* @param unknown_type $page_fix        #当前页码前后需要显示多少个页码
* @param intval $total_rows            #数据总数
* @param intval $pagesize      #每页显示多少数据
* @param string $cur_page_calss        #当前页css样式名称
*/
public function pagenation($url, $cur_page=1, $page_fix=2, $total_rows=0, $pagesize=10, $cur_page_calss='disable'){
#计算总页数
$pagesize = $pagesize>0?$pagesize:10;
$total_page = ceil($total_rows / $pagesize);

$code = '';
if($total_page>1){
$pager = array();
#首页
$pager[] = sprintf( '<ul><li><a href="%s">首页</a></li>', sprintf($url, 1) );

#页码列表
for($page_num=$cur_page-$page_fix; $page_num<$cur_page+$page_fix; $page_num++){
if($page_num<1 || $page_num>$total_page){
continue;
}
$pager[] = sprintf( '<li class="%s"><a href="%s">%s</a></li>', ( $page_num==$cur_page?$cur_page_calss:'' ), sprintf($url, $page_num), $page_num );
}

#末页
$pager[] = sprintf( '<li><a href="%s">末页</a></li><li>共%s条,第%s/%s页</li></ul>', sprintf($url, $total_page), $total_rows, $cur_page, $total_page );

$code = implode("\n", $pager);
unset($pager);
}

return $code;
}


PHP分页类,支持自定义样式,中间5页等

<?php

//namespace Component;
/**
* 2016-3-27
* @author ankang
*/
class Page {
private $ShowPage;
private $CountPage;
private $Floorp;
private $PageUrl;
private $PageClass;
private $CurClass;

/**
* @author ankang
* @param number $CountNum          数据总数
* @param string $PageUrl           跳转链接
* @param string $PageClass         <a>标签 总体样式
* @param string $PageUrl           当前页样式
* @param number $PageSize          每页显示的数据条数
* @param number $ShowPage          每次显示的页数
*/
public function __construct($CountNum, $PageUrl = NULL, $PageClass = NULL,$CurClass = NULL, $PageSize = 20, $ShowPage = 5) {
$this->ShowPage      = $ShowPage;
$this->CountPage         = ceil ( $CountNum / $PageSize );
$this->Floorp            = floor ( $ShowPage / 2 ); // 偏移量
$this->PageClass         = is_null ( $PageClass ) ? '' : $PageClass;
$this->CurClass      = is_null ( $CurClass ) ? '' : $CurClass;

// $ServerURL               = ( preg_match('/\?/i', $_SERVER['REQUEST_URI']))?preg_replace('/\&p\=[0-9]+/i', "", $_SERVER['REQUEST_URI']) : $_SERVER['REQUEST_URI']."?";
// if( substr($ButURL,0,2)=='//' ){
// $ServerURL          = substr($ServerURL,1);
// }
// $url                 = preg_replace('/p=[\d]*/i', '', $ServerURL);
$url                 = '';
//推荐自己传url,不传也可以打开上面的代码自动获取
$this->PageUrl           = is_null ( $PageUrl ) ? $url : $PageUrl;
}

/**
*
* @param number $Page
* @param string $ShowToPage
*          首页,上下页,尾页
* @param string $Html  标签元素,li,p
* @return string
*/
public function getPage($Page = 1, $ShowToPage = true, $Html = null) {
$StartPage          = ($Page - $this->Floorp); // 开始页码
$EndPage            = ($Page + $this->Floorp); // 结束页码

if ($this->CountPage < $this->ShowPage) {
$StartPage      = 1;
$EndPage        = $this->CountPage;
}

if ($StartPage < 1) {
$StartPage      = 1;
$EndPage        = $this->ShowPage;
}

if ($EndPage > $this->CountPage) {
$StartPage      = $this->CountPage - $this->ShowPage + 1;
$EndPage        = $this->CountPage;
}

$PageHtml = '';

if (! is_null ( $Html )) {
if ($Html == 'li') {
$Shtml = '<li>';
$Ehtml = '</li>';
} else {
$Shtml = '<p>';
$Ehtml = '</p>';
}
}

if (true == $ShowToPage) {
$PageHtml               .= "$Shtml<a href='{$this->PageUrl}p=1'>« 首页</a>$Ehtml";
$PrveUrl                 = $this->getPrve($Page);
$PageHtml               .= "$Shtml<a href='{$PrveUrl}'>« 上一页</a>$Ehtml";
}

for($i = $StartPage; $i <= $EndPage; $i ++) {
if ($Page == $i) {
$PageHtml           .= "$Shtml<a href='{$this->PageUrl}p={$i}' class='{$this->CurClass}'>{$i}</a>$Ehtml";
} else {
$PageHtml           .= "$Shtml<a href='{$this->PageUrl}p={$i}' class='{$this->PageClass}'>{$i}</a>$Ehtml";
}
}

if (true == $ShowToPage) {
$NextUrl                 = $this->getNext($Page);
$PageHtml               .= "$Shtml<a href='{$NextUrl}'>下一页 »</a>$Ehtml";
$PageHtml               .= "$Shtml<a href='{$this->PageUrl}p={$this->CountPage}' >尾页 »</a>$Ehtml";
}

return $PageHtml;
}

public function getPrve($Page){
if ($Page != 1) {
$Prve                = $Page - 1;
$PrveUrl             = "{$this->PageUrl}p={$Prve}";
} else {
$PrveUrl             = "{$this->PageUrl}p=1";
}

return $PrveUrl;
}

public function getNext($Page){
if ($Page != $this->CountPage) {
$Next                = $Page + 1;
$NextUrl             = "{$this->PageUrl}p={$Next}";
} else {
$NextUrl             = "{$this->PageUrl}p={$this->CountPage}";
}

return $NextUrl;
}

}


万能的分页类

<?php
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/**
* 分页类
* 使用方式:
* $page = new Page();
* $page->init(1000, 20);
* $page->setNotActiveTemplate('<span> {a} </span>');
* $page->setActiveTemplate('{a}');
* echo $page->show();
*
*
* @author 风居住的地方
*/
class Page {
/**
* 总条数
*/
private $total;
/**
* 每页大小
*/
private $pageSize;
/**
* 总页数
*/
private $pageNum;
/**
* 当前页
*/
private $page;
/**
* 地址
*/
private $uri;
/**
* 分页变量
*/
private $pageParam;
/**
* LIMIT XX,XX
*/
private $limit;
/**
* 数字分页显示
*/
private $listnum = 8;
/**
* 分页显示模板
* 可用变量参数
* {total}      总数据条数
* {pagesize}   每页显示条数
* {start}      本页开始条数
* {end}        本页结束条数
* {pagenum}    共有多少页
* {frist}      首页
* {pre}        上一页
* {next}       下一页
* {last}       尾页
* {list}       数字分页
* {goto}       跳转按钮
*/
private $template = '<div><span>共有{total}条数据</span><span>每页显示{pagesize}条数据</span>,<span>本页{start}-{end}条数据</span><span>共有{pagenum}页</span><ul>{frist}{pre}{list}{next}{last}{goto}</ul></div>';
/**
* 当前选中的分页链接模板
*/
private $activeTemplate = '<li class="active"><a href="javascript:;">{text}</a></li>';
/**
* 未选中的分页链接模板
*/
private $notActiveTemplate = '<li><a href="{url}">{text}</a></li>';
/**
* 显示文本设置
*/
private $config = array('frist' => '首页', 'pre' => '上一页', 'next' => '下一页', 'last' => '尾页');
/**
* 初始化
* @param type $total       总条数
* @param type $pageSize    每页大小
* @param type $param       url附加参数
* @param type $pageParam   分页变量
*/
public function init($total, $pageSize, $param = '', $pageParam = 'page') {
$this->total = intval($total);
$this->pageSize = intval($pageSize);
$this->pageParam = $pageParam;
$this->uri = $this->geturi($param);
$this->pageNum = ceil($this->total / $this->pageSize);
$this->page = $this->setPage();
$this->limit = $this->setlimit();
}

/**
* 设置分页模板
* @param type $template    模板配置
*/
public function setTemplate($template) {
$this->template = $template;
}

/**
* 设置选中分页模板
* @param type $activeTemplate      模板配置
*/
public function setActiveTemplate($activeTemplate) {
$this->activeTemplate = $activeTemplate;
}

/**
* 设置未选中分页模板
* @param type $notActiveTemplate   模板配置
*/
public function setNotActiveTemplate($notActiveTemplate) {
$this->notActiveTemplate = $notActiveTemplate;
}

/**
* 返回分页
* @return type
*/
public function show() {
return str_ireplace(array(
'{total}',
'{pagesize}',
'{start}',
'{end}',
'{pagenum}',
'{frist}',
'{pre}',
'{next}',
'{last}',
'{list}',
'{goto}',
), array(
$this->total,
$this->setPageSize(),
$this->star(),
$this->end(),
$this->pageNum,
$this->frist(),
$this->prev(),
$this->next(),
$this->last(),
$this->pagelist(),
$this->gopage(),
), $this->template);
}

/**
* 获取limit起始数
* @return type
*/
public function getOffset() {
return ($this->page - 1) * $this->pageSize;
}

/**
* 设置LIMIT
* @return type
*/
private function setlimit() {
return "limit " . ($this->page - 1) * $this->pageSize . ",{$this->pageSize}";
}

/**
* 获取limit
* @param type $args
* @return type
*/
public function __get($args) {
if ($args == "limit") {
return $this->limit;
} else {
return null;
}
}

/**
* 初始化当前页
* @return int
*/
private function setPage() {
if (!empty($_GET[$this->pageParam])) {
if ($_GET[$this->pageParam] > 0) {
if ($_GET[$this->pageParam] > $this->pageNum)
return $this->pageNum;
else
return $_GET[$this->pageParam];
}
}
return 1;
}

/**
* 初始化url
* @param type $param
* @return string
*/
private function geturi($param) {
$url = $_SERVER['REQUEST_URI'] . (strpos($_SERVER['REQUEST_URI'], "?") ? "" : "?") . $param;
$parse = parse_url($url);
if (isset($parse["query"])) {
parse_str($parse["query"], $params);
unset($params["page"]);
$url = $parse["path"] . "?" . http_build_query($params);
return $url;
} else {
return $url;
}
}

/**
* 本页开始条数
* @return int
*/
private function star() {
if ($this->total == 0) {
return 0;
} else {
return ($this->page - 1) * $this->pageSize + 1;
}
}

/**
* 本页结束条数
* @return type
*/
private function end() {
return min($this->page * $this->pageSize, $this->total);
}

/**
* 设置当前页大小
* @return type
*/
private function setPageSize() {
return $this->end() - $this->star() + 1;
}

/**
* 首页
* @return type
*/
private function frist() {
$html = '';
if ($this->page == 1) {
$html .= $this->replace("{$this->uri}&page=1", $this->config['frist'], true);
} else {
$html .= $this->replace("{$this->uri}&page=1", $this->config['frist'], false);
}
return $html;
}

/**
* 上一页
* @return type
*/
private function prev() {
$html = '';
if ($this->page > 1) {
$html .= $this->replace($this->uri.'&page='.($this->page - 1), $this->config['pre'], false);
} else {
$html .= $this->replace($this->uri.'&page='.($this->page - 1), $this->config['pre'], true);
}
return $html;
}

/**
* 分页数字列表
* @return type
*/
private function pagelist() {
$linkpage = "";
$lastlist = floor($this->listnum / 2);
for ($i = $lastlist; $i >= 1; $i--) {
$page = $this->page - $i;
if ($page >= 1) {
$linkpage .= $this->replace("{$this->uri}&page={$page}", $page, false);
} else {
continue;
}
}
$linkpage .= $this->replace("{$this->uri}&page={$this->page}", $this->page, true);
for ($i = 1; $i <= $lastlist; $i++) {
$page = $this->page + $i;
if ($page <= $this->pageNum) {
$linkpage .= $this->replace("{$this->uri}&page={$page}", $page, false);
} else {
break;
}
}
return $linkpage;
}

/**
* 下一页
* @return type
*/
private function next() {
$html = '';
if ($this->page < $this->pageNum) {
$html .= $this->replace($this->uri.'&page='.($this->page + 1), $this->config['next'], false);
} else {
$html .= $this->replace($this->uri.'&page='.($this->page + 1), $this->config['next'], true);
}
return $html;
}

/**
* 最后一页
* @return type
*/
private function last() {
$html = '';
if ($this->page == $this->pageNum) {
$html .= $this->replace($this->uri.'&page='.($this->pageNum), $this->config['last'], true);
} else {
$html .= $this->replace($this->uri.'&page='.($this->pageNum), $this->config['last'], false);
}
return $html;
}

/**
* 跳转按钮
* @return string
*/
private function gopage() {
$html = '';
$html.=' <input type="text" value="' . $this->page . '" onkeydown="javascript:if(event.keyCode==13){var page=(this.value>' . $this->pageNum . ')?' . $this->pageNum . ':this.value;location=\'' . $this->uri . '&page=\'+page+\'\'}" style="width:25px;"/><input type="button" onclick="javascript:var page=(this.previousSibling.value>' . $this->pageNum . ')?' . $this->pageNum . ':this.previousSibling.value;location=\'' . $this->uri . '&page=\'+page+\'\'" value="GO"/>';
return $html;
}

/**
* 模板替换
* @param type $replace     替换内容
* @param type $result      条件
* @return type
*/
private function replace($url, $text, $result = true) {
$template = ($result ? $this->activeTemplate : $this->notActiveTemplate);

$html = str_replace('{url}', $url, $template);
$html = str_replace('{text}', $text, $html);
return $html;
}
}

很随意的写出来的

<?php
/**
* Created by PhpStorm.
* User: zerodeng
* Date: 15-5-12
* Time: 下午4:09
*/

class pagination {

private $total;
private $per_page;
private $link;
private $page;
private $page_offset;
private static $instance;

public function __construct(){
$this->per_page = 40;
}

public static function get_instance(){
if(!isset(self::$instance)){
self::$instance = new self;
}
return self::$instance;
}

public function set_total($num){
$this->total = $num;
}

public function set_link($link=''){
if($link){
$this->link = $link.'?page=';
}else{
$this->link = $_SERVER['SERVER_NAME'].$_SERVER['PHP_SELF'].'?page=';
}
}

public function set_page(){
if(!empty($_GET['page'])){
$this->page = $_GET['page'];
}else{
$this->page = 1;
}
}

public function set_page_offset(){
if(isset($this->page)){
$this->page_offset = ($this->page-1)*$this->per_page;
}
}

public function page_limit($mode=''){
$this->set_page();
$this->set_page_offset();
if($mode == 'str'){
$limit = $this->page_offset.','.$this->per_page;
return $limit;
}
$limit = array($this->page_offset,$this->per_page);
return $limit;
}

public function show_page($page_num=5){
if(!isset($this->page)){
$this->set_page();
}
$first_page = 1;
$last_page = ceil($this->total/$this->per_page);
if(!isset($this->link)){
$this->set_link();
}
$html = '';
$html .= '<div id="show_page">总共'.$this->total.'条记录 '.$this->page.'/'.$last_page;
if($this->page != $first_page){
$html .= '<a href="http://'.$this->link.$first_page.'">首页</a> ';
}
if($page_num>=$last_page){
for($i = 1;$i<=$last_page;$i++){
$html .= '| <a href="http://'.$this->link.$i.'">'.$i.'</a> ';
}
}else{
$page_offset = $this->page+$page_num;
if($page_offset<$last_page){
for($i=$this->page;$i<=($this->page+$page_num);$i++){
$html .= '| <a href="http://'.$this->link.$i.'">'.$i.'</a> ';
}
}else{
for($i=$this->page;$i<=$last_page;$i++){
$html .= '| <a href="http://'.$this->link.$i.'">'.$i.'</a> ';
}
}

}
if($this->page != $last_page){
$html .= '<a href="http://'.$this->link.$last_page.'">最后一页</a> ';
}
$html .= '</div>';
return $html;
}

}

又是一个随便写的分页类!看原理,很强大

<?php
class page
{
private $pagesize;
private $lastpage;
private $totalpages;
private $nums;
private $numPage=1;

function __construct($page_size,$total_nums)
{
$this->pagesize=$page_size;      //每页显示的数据条数
$this->nums=$total_nums;     //总的数据条数
$this->lastpage=ceil($this->nums/$this->pagesize);     //最后一页
$this->totalpages=ceil($this->nums/$this->pagesize);   //总得分页数
if(!empty($_GET[page]))
{
$this->numPage=$_GET[page];
if(!is_int($this->numPage))  $this->numPage=(int)$this->numPage;
if($this->numPage<1)  $this->numPage=1;
if($this->numPage>$this->lastpage) $this->numPage=$this->lastpage;
}
}

function show_page_result()
{
$row_num=(($this->numPage)-1) * $this->pagesize; //表示每一页从第几条数据开始显示
$row_num=$row_num.",";
$SQL="SELECT * FROM `test` LIMIT $row_num $this->pagesize";
$db=new database();
$query=$db->execute($SQL);
while($row=mysql_fetch_array($query))
{
echo "<b>".$row[name]." | ".$row[sex]."<hr>";
}
$db=null;
}

function show_page_way_1()  //以"首页 上一页 下一页 尾页"形式显示
{
$url=$_SERVER["REQUEST_URI"];
$url=parse_url($url);   //parse_url -- 解析 URL,返回其组成部分,注: 此函数对相对路径的 URL 不起作用。
$url=$url[path];
if($this->nums > $this->pagesize)      //判断是否满足分页条件
{
echo " 共 $this->totalpages 页 当前为第<font color=red><b>$this->numPage</b></font>页 共 $this->nums 条 每页显示 $this->pagesize 条";
if($this->numPage==1)
{
echo " 首页 ";
echo "上一页 ";
}
if($this->numPage >= 2 && $this->numPage <= $this->lastpage)
{
echo " <a href=$url?page=1>首页</a> " ;
echo "<a href=$url?page=".($this->numPage-1).">上一页</a> " ;
}

if($this->numPage==$this->lastpage)
{
echo "下一页 ";
echo "尾页<br>";
}
if($this->numPage >= 1 && $this->numPage < $this->lastpage)
{
echo "<a href=$url?page=".($this->numPage+1).">下一页</a> ";
echo "<a href=$url?page=$this->lastpage>尾页</a><br> ";
}
}
else    return;
}

function show_page_way_2()      //以数字形式显示"首页 1 2 3 4 尾页"
{
$url=$_SERVER["REQUEST_URI"];
$url=parse_url($url);   //parse_url -- 解析 URL,返回其组成部分,注: 此函数对相对路径的 URL 不起作用。
$url=$url[path];
if($this->nums > $this->pagesize)
{
if($this->numPage==1)    echo "首页";
else    echo "<a href=$url?page=1>首页</a>";
for($i=1;$i<=$this->totalpages;$i++)
{
if($this->numPage==$i)
{
echo " ".$i." ";
}
else
{
echo " <a href=$url?page=$i>$i</a> ";
}

}
if($this->numPage==$this->lastpage)       echo "尾页";
else    echo "<a href=$url?page=$this->lastpage>尾页</a>";
}
}

function show_page_way_3()
{
global $c_id;
$url=$_SERVER["REQUEST_URI"];
$url=parse_url($url);   //parse_url -- 解析 URL,返回其组成部分,注: 此函数对相对路径的 URL 不起作用。
$url=$url[path];
if($this->nums > $this->pagesize)      //判断是否满足分页条件
{
if($c_id)
{
echo "到第<select name='select1' onChange=\"location.href='$url?c_id=$c_id&page='+this.value+'&pagesize=$this->pagesize'\">";
}
else    echo "到第<select name='select1' onChange=\"location.href='$url?page='+this.value+'&pagesize=$this->pagesize'\">";
for($i = 1;$i <= $this->totalpages;$i++)
echo "<option value='" . $i . "'" . (($this->numPage == $i) ? 'selected' : '') . ">" . $i . "</option>";
echo "</select>页, 每页显示";
if($c_id)
{
echo "<select name=select2 onChange=\"location.href='$url?c_id=$c_id&page=$this->numPage&pagesize='+this.value+''\">";
}
else    echo "<select name=select2 onChange=\"location.href='$url?page=$this->numPage&pagesize='+this.value+''\">";
for($i = 0;$i < 5;$i++) // 将个数定义为五种选择
{
$choice= ($i+1)*4;
echo "<option value='" . $choice . "'" . (($this->pagesize == $choice) ? 'selected' : '') . ">" . $choice . "</option>";
}
echo "</select>个";
}
else    return;     //echo "没有下页了";

}

}

?>
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