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二个php分页程序代码
PHP分页器制作,自动生成分面页码,JS调用函数,分页的原理大致如下,分页程序有两个非常重要的参数:每页显示几条记录($pagesize)和当前是第几页($page).
有了这两个参数就可以很方便的写出分页程序,我们以MySql数据库作为数据源,在mysql里如果要想取出表内某段特定内容可以使用的 T-SQL语句:select * from table limit offset,rows来实现。这里的offset是记录偏移量,它的计算方法是offset=$pagesize*($page-1),rows是要显示的记录条数,这里就是$page,也就是说select * from table limit 10,10这条语句的意思是取出表里从第11条记录开始的20条记录.
PHP实例代码如下:
- <?php
- class PageView{
- /**页码**/
- public $pageNo = 1;
- /**页大小**/
- public $pageSize = 20;
- /**共多少页**/
- public $pageCount = 0;
- /**总记录数**/
- public $totalNum = 0;
- /**偏移量,当前页起始行**/
- public $offSet = 0;
- /**每页数据**/
- public $pageData = array();
- /**是否有上一页**/
- public $hasPrePage = true;
- /**是否有下一页**/
- public $hasNextPage = true;
- public $pageNoList = array();
- public $jsFunction ='jsFunction';
- /**
- *
- * @param unknown_type $count 总行数
- * @param unknown_type $size 分页大小
- * @param unknown_type $string
- */
- public function __construct($count=0, $size=20,$pageNo=1,$pageData =array(),$jsFunction='jsFunction'){
- $this->totalNum = $count;//总记录数
- $this->pageSize = $size;//每页大小
- $this->pageNo = $pageNo;
- //计算总页数
- $this->pageCount = ceil($this->totalNum/$this->pageSize);
- $this->pageCount = ($this->pageCount<=0)?1:$this->pageCount;
- //检查pageNo
- $this->pageNo = $this->pageNo == 0 ? 1 : $this->pageNo;
- $this->pageNo = $this->pageNo > $this->pageCount? $this->pageCount : $this->pageNo;
- //计算偏移
- $this->offset = ( $this->pageNo - 1 ) * $this->pageSize;
- //计算是否有上一页下一页
- $this->hasPrePage = $this->pageNo == 1 ?false:true;
- $this->hasNextPage = $this->pageNo >= $this->pageCount ?false:true;
- $this->pageData = $pageData;
- $this->jsFunction = $jsFunction;
- }
- /**
- * 分页算法
- * @return
- */
- private function generatePageList(){
- $pageList = array();
- if($this->pageCount <= 9){
- for($i=0;$i<$this->pageCount;$i++){
- array_push($pageList,$i+1);
- }
- }else{
- if($this->pageNo <= 4){
- for($i=0;$i<5;$i++){
- array_push($pageList,$i+1);
- }
- array_push($pageList,-1);
- array_push($pageList,$this->pageCount);
- }else if($this->pageNo > $this->pageCount - 4){
- array_push($pageList,1);
- array_push($pageList,-1);
- for($i=5;$i>0;$i--){
- array_push($pageList,$this->pageCount - $i+1);
- }
- }else if($this->pageNo > 4 && $this->pageNo <= $this->pageCount - 4){
- array_push($pageList,1);
- array_push($pageList,-1);
- array_push($pageList,$this->pageNo -2);
- array_push($pageList,$this->pageNo -1);
- array_push($pageList,$this->pageNo);
- array_push($pageList,$this->pageNo + 1);
- array_push($pageList,$this->pageNo + 2);
- array_push($pageList,-1);
- array_push($pageList,$this->pageCount);
- }
- }
- return $pageList;
- }
- /***
- * 创建分页控件
- * @param
- * @return String
- */
- public function echoPageAsDiv(){
- $pageList = $this->generatePageList();
- $pageString ="<div class='pagination'><div class='page-bottom'>";
- if(!emptyempty($pageList)){
- if($this->pageCount >1){
- if($this->hasPrePage){
- $pageString = $pageString ."<a class='page-next' href="javascript:" .$this->jsFunction . "(" . ($this->pageNo-1) . ")">上一页</a>";
- }
- foreach ($pageList as $k=>$p){
- if($this->pageNo == $p){
- $pageString = $pageString ."<span class='page-cur'>" . $this->pageNo . "</span>";
- continue;
- }
- if($p == -1){
- $pageString = $pageString ."<span class='page-break'>...</span>";
- continue;
- }
- $pageString = $pageString ."<a href="javascript:" .$this->jsFunction . "(" . $p . ")">" . $p . "</a>";
- }
- if($this->hasNextPage){
- $pageString = $pageString ."<a class='page-next' href="javascript:" .$this->jsFunction . "(" . ($this->pageNo+1) . ")">下一页</a>";
- }
- }
- }
- $pageString = $pageString .("</div></div>");
- return $pageString;
- }
- }
- ?>
css,代码如下:
- <style type="text/css">
- <!--
- .pagination {font-family: Tahoma;overflow: hidden; padding-top: 12px; text-align: center;}
- .pagination-tab { margin-bottom: 20px;}
- .pagination a, .pagination .page-cur, .pagination .page-prev_g, .pagination .page-prev, .pagination .page-next, .pagination .page-next_g, .pagination .page-break, .pagination .page-skip {
- display: inline-block;font-family: Tahoma,SimSun,Arial; height: 22px;line-height:22px; margin: 0; min-width: 16px;padding: 0 5px; text-align: center; vertical-align: top; white-space: nowrap;}
- .pagination a, .pagination .page-prev_g, .pagination .page-prev, .pagination .page-next, .pagination .page-next_g, .pagination .page-cur, .pagination .page-break {
- border: 1px solid #ed3d83; color:#e9357d; font-weight:bold;}
- .pagination a:hover { border: 1px solid #ed3d83;text-decoration: none; background-color:#f95f9d; color:#fff;}
- .pagination .page-prev_g, .pagination .page-prev, .pagination .page-next, .pagination .page-next_g { width: 36px; background-image: url(../static/img/page.gif);}
- .pagination .page-prev { background-position: -0px -38px; padding-left: 16px;}
- .pagination .page-prev_g { background-position:0px -59px; padding-left: 16px; color:#cbcbcb; font-weight:normal;}
- .pagination .page-next { background-position: 0px 0px; padding-right: 16px; font-weight:normal;}
- .pagination .page-next_g { background-position: -0px -19px; padding-right: 16px; color:#cbcbcb;}
- .pagination .page-cur {background-color: #f95f9d; border: 1px solid #ed3d83;color: #fff;font-weight: bold;}
- .pagination .page-break {border: medium none; background:none transparent; color:#333;}
- -->
- </style>
使用方法,代码如下:
- $pageNo = $_GET['pageNo'];
- if(emptyempty($pageNo)){
- $pageNo = 1;
- }
- //分页数据
- $pageData = News::getNewsPage($pageNo,$pageSize);
- //取得总行数
- $count = News::getNewsCount();
- //创建分页器
- $p = new PageView($count['0']['TOTAL'],$pageSize,$pageNo,$pageData);
- //生成页码
- $pageViewString = $p->echoPageAsDiv();
下面再介绍一个分页类,代码如下:
- <?php
- class SubPages{
- private $each_disNums;//每页显示的条目数
- private $nums;//总条目数
- private $current_page;//当前被选中的页
- private $sub_pages;//每次显示的页数
- private $pageNums;//总页数
- private $page_array = array();//用来构造分页的数组
- private $subPage_link;//每个分页的链接
- private $subPage_type;//显示分页的类型
- /*
- __construct是SubPages的构造函数,用来在创建类的时候自动运行.
- @$each_disNums 每页显示的条目数
- @nums 总条目数
- @current_num 当前被选中的页
- @sub_pages 每次显示的页数
- @subPage_link 每个分页的链接
- @subPage_type 显示分页的类型
- 当@subPage_type=1的时候为普通分页模式
- example: 共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]
- 当@subPage_type=2的时候为经典分页样式
- example: 当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]
- */
- function __construct($each_disNums,$nums,$current_page,$sub_pages,$subPage_link,$subPage_type){
- $this->each_disNums=intval($each_disNums);
- $this->nums=intval($nums);
- if(!$current_page){
- $this->current_page=1;
- }else{
- $this->current_page=intval($current_page);
- }
- $this->sub_pages=intval($sub_pages);
- $this->pageNums=ceil($nums/$each_disNums);
- $this->subPage_link=$subPage_link;
- $this->show_SubPages($subPage_type);
- //echo $this->pageNums."--".$this->sub_pages;
- }
- /*
- __destruct析构函数,当类不在使用的时候调用,该函数用来释放资源。
- */
- function __destruct(){
- unset($each_disNums);
- unset($nums);
- unset($current_page);
- unset($sub_pages);
- unset($pageNums);
- unset($page_array);
- unset($subPage_link);
- unset($subPage_type);
- }
- /*
- show_SubPages函数用在构造函数里面。而且用来判断显示什么样子的分页
- */
- function show_SubPages($subPage_type){
- if($subPage_type == 1){
- $this->subPageCss1();
- }elseif ($subPage_type == 2){
- $this->subPageCss2();
- }
- }
- /*
- 用来给建立分页的数组初始化的函数。
- */
- function initArray(){
- for($i=0;$i<$this->sub_pages;$i++){
- $this->page_array[$i]=$i;
- }
- return $this->page_array;
- }
- /*
- construct_num_Page该函数使用来构造显示的条目
- 即使:[1][2][3][4][5][6][7][8][9][10]
- */
- function construct_num_Page(){
- if($this->pageNums < $this->sub_pages){
- $current_array=array();
- for($i=0;$i<$this->pageNums;$i++){
- $current_array[$i]=$i+1;
- }
- }else{
- $current_array=$this->initArray();
- if($this->current_page <= 3){
- for($i=0;$i<count($current_array);$i++){
- $current_array[$i]=$i+1;
- }
- }elseif ($this->current_page <= $this->pageNums && $this->current_page > $this->pageNums - $this->sub_pages + 1 ){
- for($i=0;$i<count($current_array);$i++){
- $current_array[$i]=($this->pageNums)-($this->sub_pages)+1+$i;
- }
- }else{
- for($i=0;$i<count($current_array);$i++){
- $current_array[$i]=$this->current_page-2+$i;
- }
- }
- }
- return $current_array;
- }
- /*
- 构造普通模式的分页
- 共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]
- */
- function subPageCss1(){
- $subPageCss1Str="";
- $subPageCss1Str.="共".$this->nums."条记录,";
- $subPageCss1Str.="每页显示".$this->each_disNums."条,";
- $subPageCss1Str.="当前第".$this->current_page."/".$this->pageNums."页 ";
- if($this->current_page > 1){
- $firstPageUrl=$this->subPage_link."1";
- $prewPageUrl=$this->subPage_link.($this->current_page-1);
- $subPageCss1Str.="[<a href='$firstPageUrl'>首页</a>] ";
- $subPageCss1Str.="[<a href='$prewPageUrl'>上一页</a>] ";
- }else {
- $subPageCss1Str.="[首页] ";
- $subPageCss1Str.="[上一页] ";
- }
- if($this->current_page < $this->pageNums){
- $lastPageUrl=$this->subPage_link.$this->pageNums;
- $nextPageUrl=$this->subPage_link.($this->current_page+1);
- $subPageCss1Str.=" [<a href='$nextPageUrl'>下一页</a>] ";
- $subPageCss1Str.="[<a href='$lastPageUrl'>尾页</a>] ";
- }else {
- $subPageCss1Str.="[下一页] ";
- $subPageCss1Str.="[尾页] ";
- }
- echo $subPageCss1Str;
- }
- /*
- 构造经典模式的分页
- 当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]
- */
- function subPageCss2(){
- $subPageCss2Str="";
- $subPageCss2Str.="当前第".$this->current_page."/".$this->pageNums."页 ";
- if($this->current_page > 1){
- $firstPageUrl=$this->subPage_link."1";
- $prewPageUrl=$this->subPage_link.($this->current_page-1);
- $subPageCss2Str.="[<a href='$firstPageUrl'>首页</a>] ";
- $subPageCss2Str.="[<a href='$prewPageUrl'>上一页</a>] ";
- }else {
- $subPageCss2Str.="[首页] ";
- $subPageCss2Str.="[上一页] ";
- }
- $a=$this->construct_num_Page();
- for($i=0;$i<count($a);$i++){
- $s=$a[$i];
- if($s == $this->current_page ){
- $subPageCss2Str.="[<span style='color:red;font-weight:bold;'>".$s."</span>]";
- }else{
- $url=$this->subPage_link.$s;
- $subPageCss2Str.="[<a href='$url'>".$s."</a>]";
- }
- }
- if($this->current_page < $this->pageNums){
- $lastPageUrl=$this->subPage_link.$this->pageNums;
- $nextPageUrl=$this->subPage_link.($this->current_page+1);
- $subPageCss2Str.=" [<a href='$nextPageUrl'>下一页</a>] ";
- $subPageCss2Str.="[<a href='$lastPageUrl'>尾页</a>] ";
- }else {
- $subPageCss2Str.="[下一页] ";
- $subPageCss2Str.="[尾页] ";
- }
- echo $subPageCss2Str;
- }
- }
- ?>
调用方法,代码如下:
- <?php
- require_once("SubPages.php");
- //每页显示的条数
- $page_size=20;
- //总条目数
- $nums=1024;
- //每次显示的页数
- $sub_pages=10;
- //得到当前是第几页
- $pageCurrent=$_GET["p"];
- //if(!$pageCurrent) $pageCurrent=1;
- $subPages=new SubPages($page_size,$nums,$pageCurrent,$sub_pages,"test.php?p=",2);
- ?>
出处:http://www.phpfensi.com/php/20140729/4042.html
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