通用分页实现(PHP版)
自己写的一个通用分页,带下拉选择,可设置显示的分页链接数,不多说,看代码和注释:
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<?php
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//Written by Shaoyun 20:17 2008年5月31日
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//Email:shaoyun at yeah.net
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//Blog:http://shaoyun.cnblogs.com
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//分页函数:splitpage(记录总数,每页显示记录数,显示几条分页链接)
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function splitpage($rscount,$pagesize,$shownum){
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//计算总页数
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if ($rscount % $pagesize){
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$pagenum=(int)($rscount/$pagesize)+1;
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}else{
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$pagenum=(int)($rscount/$pagesize);
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}
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//过滤获取正确的页码
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if(!isset($_GET["page"])){
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$curpage=1;
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}elseif(is_numeric($_GET["page"])){
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if($_GET["page"]>$pagenum)
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$curpage=$pagenum;
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else
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$curpage=(int)$_GET["page"];
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if($curpage<1)
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$curpage=1;
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}else{
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$curpage=1;
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}
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//设置前一页、后一页、上一页、下一页
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$first_page=1;
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$last_page=$pagenum;
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$up_page=$curpage-1;
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$down_page=$curpage+1;
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//获取当前文件名
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$addr_url=$_SERVER["SCRIPT_NAME"];
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$addr_url=strrev($addr_url);
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$addr_url=substr($addr_url,0,strpos($addr_url,"/"));
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$addr_url=strrev($addr_url);
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$addr_url=$addr_url."?page=";
37![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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$page_html='共'.$rscount.'条记录 '.$pagesize.'条/页 第'.$curpage.'/'.$pagenum.'页 ';
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$page_html.="<a href='".$addr_url.$first_page."'>首页</a> ";
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if($curpage>1){
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$page_html.="<a href='".$addr_url.$up_page."'>上一页</a> ";
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}else{
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$page_html.="上一页 ";
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}
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//计算分页边界
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if($shownum % 2){
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$show_front_num=(int)($shownum/2);
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$show_back_num=(int)($shownum/2);
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}else{
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$show_front_num=(int)($shownum/2)-1;
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$show_back_num=(int)($shownum/2);
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}
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if($curpage<$show_front_num+1){
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$fbegin=1;
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$fend=$shownum;
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}elseif($curpage+$show_back_num>$pagenum){
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$fend=$pagenum;
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$fbegin=$pagenum-$shownum+1;
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}else{
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$fbegin=$curpage-$show_front_num;
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$fend=$curpage+$show_back_num;
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}
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//分页链接
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for($idx=$fbegin;$idx<$fend+1;++$idx){
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if($curpage==$idx){
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$page_html.="<b>".$idx."</b> ";
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}else{
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$page_html.="<a href='".$addr_url.$idx."'>".$idx."</a> ";
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}
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}
72![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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if($curpage<$pagenum){
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$page_html.="<a href='".$addr_url.$down_page."'>下一页</a> ";
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}else{
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$page_html.="下一页 ";
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}
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$page_html.="<a href='".$addr_url.$last_page."'>尾页</a> ";
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//下拉导航代码
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$page_html.="跳转到 ";
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$page_html.="<select onChange=window.location.href=this.options[this.selectedIndex].value>";
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for($idx=1;$idx<$pagenum+1;++$idx){
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if($curpage==$idx){
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$page_html.="<option value='".$addr_url.$idx."' selected>第".$idx."页</option>";
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}else{
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$page_html.="<option value='".$addr_url.$idx."'>第".$idx."页</option>";
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}
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}
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$page_html.="</select>";
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echo $page_html;
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}
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?>
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