推荐一款PHP+jQuery制作的列表分页的功能模块(2)
ROOT: ├─conn │ └─conn.php │ ├─libs -- smarty库 │ ├─templates │ │ │ ├─demo.html -- 功能页模板文件 │ │ │ ├─css │ │ ├─common.css │ │ └─st
ROOT:
├─conn
│ └─conn.php
│
├─libs -- smarty库
│
├─templates
│ │
│ ├─demo.html -- 功能页模板文件
│ │
│ ├─css
│ │ ├─common.css
│ │ └─style1.css
│ │
│ ├─images
│ │ └─loading.gif -- ajax分页时请求数据接收到之前的加载图
│ └─js
│ ├─jquery-1.8.3.min.js
│ └─ajax.js -- 当分页方式为ajax时模板demo.html加载的js
│
├─templates_c
│
├─init.inc.php -- smarty配置文件
│
├─page.class.php -- 分页类
│
├─demo.php
│
└─ajaxpage.php -- ajax分页时接受请求的php文件
要注意的地方：
1.偏移量的显示设置，主要是什么时候 url 分页方式1，什么时候显示"..." ：当前页码 - 前偏移量 - 1 > 1 时，应当显示前面的"..."； 当前页码 + 后偏移量 + 1 < 总页数时，应当显示后面的"..."；
2.选择性加载 js ：当使用 ajax 方式进行分页时，才加载 ajax.js
3.外部的 js 无法解析 smarty 的标签，所以在使用外部 js 时的传值要进行处理
4.ajax 分页时，默认是第一页，也就是一定首先会出现 "下一页" 和 "末页"，所以 "上一页" 和 "首页" 的添加和点击函数应当包含在"下一页" 和 "末页" 的点击函数中。
主要代码：
page.class.php:
<?php
class MyPageUrl{
private $totalNum;
private $perpageNum; //每页显示条数
private $pageNow; //当前页页码
private $url; //当前url
//页码显示
private $pageStyle; //页码样式，提供2种样式
private $prePage; //页码前偏移量
private $floPage; //页码后偏移量
private $skipStyle; //手动跳转，0为手动输入页码，1为下拉菜单选择页码
private $page_act; //翻页样式 0:url 1:ajax
//页码文字
//style2&style3
private $firstFonts = "首页";
private $lastFonts = "末页";
private $nextFonts = "下一页 >";
private $preFonts = "< 上一页";
//前n页，后n页
private $page_n;
private $pn = 10;
private $pn_fonts = "前10页";
private $fn = 10;
private $fn_fonts = "后10页";
//展现的页码
private $pageShow;
//构造函数
function __construct($totalNum,$perpageNum,$prePage,$preFonts,$floPage,$nextFonts,$p,$skipStyle,$pageStyle,$page_n,$page_act){
$this->totalNum = $totalNum;
$this->perpageNum = $perpageNum;
$this->prePage = $prePage;
$this->floPage = $floPage;
$this->skipStyle = $skipStyle;
$this->pageStyle = $pageStyle;
$this->page_n = $page_n;
$this->page_act = $page_act;
$this->getPageNow($p);
$this->totalPage = $this->getTotalPage(); //总页数
$this->pageShow = "";
$this->getUrl();
}
/************定义__toString方法,把对象解析成字符串******/
public function __toString(){
return $this->pageShow;
}
/************获得当前页页码,$p用来接收$_GET['p']*******/
public function getPageNow($p){
if(!isset($p)){
$this->pageNow = 1;
}else if($p>0){
$this->pageNow = $p;
}else{
die("page number error");
}
return $this->pageNow;
}
/***********************设置当前页面链接***************/
public function getUrl(){
$url = "http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
//判断是否带参数
if(strpos($url,"?") === false){ //不带参数
return $this->url = $url."?";
}else{ //带参数
$url = explode("?",$url);
//参数
$param = $url[1];
//判断是否有多个参数
if(strpos($param,"&") === false){ //只有一个参数
//判断参数是否为p
if(strpos($param,"p=") === false){ //不含参数p
//合并url
$url = implode("?",$url);
return $this->url = $url."&";
}else{
//把参数p去掉
$url = $url[0];
return $this->url = $url."?";
}
}else{ //多个参数
$param = explode("&",$param);
//遍历参数数组
foreach($param as $k=>$v){
if(strpos($v,"p=") === false){
continue;
}else{
//当含有参数p时，把它从数组中删除
unset($param[$k]);
}
}
//删除参数p之后组合数组
$param = implode("&",$param);
$url[1] = $param;
$url = implode("?",$url);
return $this->url = $url."&";
}
}
}
/************************前偏移量处理********************/
public function preOffset($preFonts){
//前偏移量的处理
if($this->pageNow!=1 && ($this->pageNow - $this->prePage -1 <= 1)){
//上一页
$this->pageShow .= "<a id=\"per_page\" class=\"pagenum\" href=\"".$this->url."p=".($this->pageNow-1)."\">".($preFonts == ""?$this->preFonts:$preFonts)."</a>";
//页码
for($i=1;$i<=$this->pageNow-1;$i++){
//ajax方式不显示
if($this->page_act != 1){
$this->pageShow .= "<a class=\"pagenum\" href=\"".$this->url."p=".$i."\">".$i."</a>";
}
}
}else if($this->pageNow - $this->prePage -1 > 1){ //pageNow至少大于2时才会出现"1..."
//样式1.加上'首页'
if($this->pageStyle == 2 || $this->page_act == 1){
//首页
$this->pageShow .= "<a id=\"first_page\" class=\"pagenum\" href=\"".$this->url."p=1\">".$this->firstFonts."</a>";
//style2.前n页
if($this->page_n == 1 && $this->page_act != 1){
if($this->pageNow>$this->pn){
$this->pageShow .= "<a id=\"pre_n_page\" class=\"pagenum\" href=\"".$this->url."p=".($this->pageNow-$this->pn)."\">".$this->pn_fonts."</a>";
}
}
}
//上一页
$this->pageShow .= "<a id=\"pre_page\" class=\"pagenum\" href=\"".$this->url."p=".($this->pageNow-1)."\">".($preFonts == ""?$this->preFonts:$preFonts)."</a>";
//样式1.加上第一页'1'、'...'
if($this->pageStyle == 1){
$this->pageShow .= "<a class=\"pagenum\" href=\"".$this->url."\">1</a><a id=\"pre_page_2\" class=\"pagenum\" href=\"".$this->url."p=".($this->pageNow-$this->prePage-1)." \" title=\"第".($this->pageNow-$this->prePage-1)."页\">…</a>";
}
for($i=$this->prePage;$i>=1;$i--){
//当前页和'...'之间的页码，ajax方式不显示
if($this->page_act != 1){
$this->pageShow .= "<a class=\"pagenum\" href=\"".$this->url."p=".($this->pageNow-$i)."\">".($this->pageNow-$i)."</a>";
}
}
}
}
/**********************页码和后偏移量处理***************************/
public function floOffset($nextFonts){
if($this->totalPage > $this->floPage){ //总页数大于后偏移量时
for($i=0;$i<=$this->floPage;$i++){
$page = $this->pageNow+$i;
if($page<=$this->totalPage){
//页码,ajax方式不显示
if($this->page_act != 1){
$this->pageShow .= "<a class=\"pagenum\" href=\"".$this->url."p=".$page."\">".$page."</a>";
}
}
}
if($this->pageNow < $this->totalPage){
//当前页+后偏移量+1小于总页数时出现"..."
if(($this->pageNow+$this->floPage+1)<$this->totalPage){
//样式1.显示'...'
if($this->pageStyle == 1){
$this->pageShow .= "<a id=\"flo_page_2\" class=\"pagenum\" href=\"".$this->url."p=".($page+1)."\" title=\"第".($page+1)."页\">…</a>";
}
}
//当前页+后偏移量+1小于等于总页数时出现最后一页的快捷标签
if(($this->pageNow+$this->floPage+1)<=$this->totalPage){
//最后一页
//样式1.始终出现'最后一页页码'
if($this->pageStyle == 1){
$this->pageShow .= "<a class=\"pagenum\" href=\"".$this->url."p=".$this->totalPage."\" title=\"总共".$this->totalPage."页\">".$this->totalPage."</a>";
}
}
$this->pageShow .= "<a id=\"flo_page\" class=\"pagenum\" href=\"".$this->url."p=".($this->pageNow+1)."\">".($nextFonts == ""?$this->nextFonts:$nextFonts)."</a>"; //当实例化对象时用户传递的文字为空时则调用类预设的"下一页",否则输出用户传递的值
//style2.加上后n页
if($this->pageStyle == 2 && $this->page_n == 1 && $this->page_act != 1){
if(($this->pageNow+10)<$this->totalPage){
$this->pageShow .= "<a id=\"flo_n_page\" class=\"pagenum\" href=\"".$this->url."p=".($this->pageNow+$this->fn)."\">".$this->fn_fonts."</a>";
}
}
//显示'末页'
if($this->pageStyle == 2){
if(($this->pageNow+$this->floPage+1)<$this->totalPage){
$this->pageShow .= "<a id=\"last_page\" class=\"pagenum\" href=\"".$this->url."p=".$this->totalPage."\">末页</a>";
}
}
}else if($this->pageNow > $this->totalPage){
die("超出页码范围");
}
}else{ //总页数小于后偏移量时
for($i=0;$i<$this->totalPage;$i++){
$page = $this->pageNow+$i;
//页码后边界
$this->pageShow .= "<a class=\"pagenum\" href=\"".$this->url."p=".$page."\">".$page."</a>";
}
}
}
/********************其它页面信息***********************/
public function getOtherInfo(){
//ajax方式不显示手动跳转信息
if($this->page_act != 1){
$this->pageShow .= " 跳转至 ";
//跳转类型
if($this->skipStyle =="" ){ //不加跳转
$this->pageShow .= "";
}else if($this->skipStyle == 1){ //输入框
$this->pageShow .= "<input id=\"skip\" type=\"text\" value=\"".$this->pageNow."\">";
$this->pageShow .= "<button id=\"go\">GO</button>";
}else if($this->skipStyle == 2){ //下拉菜单
//选择下拉菜单自动跳转
$this->pageShow .= "<select id=\"select_page\" onchange=\"location.href=this.options[this.selectedIndex].value;\" >";
for($i=1;$i<=$this->totalPage;$i++){
$this->pageShow .= "<option value=\"".$this->url."p=".$i."\"";
//下拉菜单默认显示当前页
if($i == $this->pageNow){
$this->pageShow .= " selected";
}
$this->pageShow .= ">".$i."</option>";
}
$this->pageShow .= "</select>";
}
}
$this->pageShow .= "<span id=\"pagenow_info\"> 当前第".$this->pageNow."页</span>";
$this->pageShow .= "/<span id=\"totalpage_info\">共".$this->totalPage."页</span>";
$this->pageShow .= " <span id=\"totalNum_info\">共".$this->totalNum."条</span>";
}
/*****************获取每页第一条信息*****************/
public function getFirstRow(){
$firstRow = $this->perpageNum * ($this->pageNow-1) + 1;//当前页第一条是总条数中第几条
return $firstRow;
}
/********************获得总页数***********************/
public function getTotalPage(){
$totalPage = ceil($this->totalNum / $this->perpageNum);
return $totalPage;
}
/* ****************获取上一页、下一页文字*************** */
public function getPreFonts($preFonts){
return ($preFonts=="")?$this->preFonts:$preFonts;
}
public function getNextFonts($nextFonts){
return ($nextFonts=="")?$this->nextFonts:$nextFonts;
}
}
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