paging_class.php
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<?php
/**
* Tiny - A PHP Framework For Web Artisans
* @author Tiny <tinylofty@gmail.com>
* @copyright Copyright(c) 2010-2014 http://www.tinyrise.com All rights reserved
* @version 1.0
*/
/**
* 分页类
*
* @author Tiny
* @class Paging
*/
class Paging{
public $total_nums; //总数据数： 必须传入该值，以数组的形式传入 用mysql_num_rows 获得该值
public $pagesize; //每页显示条数 ： 必须传入该值
private $totalpage; //总页数：$total_nums/$pagesize
private $page; //当前的页数
public $pagename = 'p'; //可选："页"的名字 默认为"p"
private $first_row; //必须写在select语句中的limit后
private $url=''; //当前页的url
public $plus; //当前页与前后的"间距"
private $url1; //取出page后的url 因为在select里要取得this.value的值
private $ajax=false;
/**
* 初始化数据
*
* @access public
* @param array $data
* @return mixed
*/
public function __construct($data=array())
{
$this->total_nums=$data["total_nums"];
$this->pagesize=$data["pagesize"];
$this->pagename=!empty($data["pagename"])?$data["pagename"]:"p";
$this->totalpage=ceil($this->total_nums/$this->pagesize);
$this->plus=!empty($data["plus"]) && $data["plus"]>=0 && $data["plus"]<$this->totalpage/2?intval($data["plus"]):ceil($this->totalpage/2);
$this->page=isset($data['page'])?intval($data['page']):intval(!empty($_GET[$this->pagename])?$_GET[$this->pagename]:"1");
$this->page=$this->page >= $this->totalpage?$this->page=$this->totalpage:$this->page;
$this->page=$this->page<=0?"1":$this->page;
$this->first_row=($this->page-1)*$this->pagesize;
$this->ajax = (isset($data['ajax']) && $data['ajax']==true)?true:false;
$this->ajaxFunction = (isset($data['ajaxFunction']) && $data['ajaxFunction']!='')?$data['ajaxFunction']:'void(0)';
$this->url = isset($data['url'])?$data['url']:'';
}
public function currentPage()
{
return $this->page;
}
public function getFirstRow()
{
return $this->first_row;
}
/**
* 取得url路径
*
* @access private
* @param mixed $page
* @return mixed
*/
private function _get_url($page)
{
if($this->url=='')$url = Url::requestUri();//$_SERVER['REQUEST_URI'];
else $url = $this->url;
$url = urldecode($url);
$arr = array('<'=>'','>'=>'',"'"=>'','"'=>'',' '=>'');
$url = strtr($url,$arr);
$parse = parse_url($url);
$fragment = "";
if(isset($parse['fragment']))
{
$fragment = '#'.$parse['fragment'];
}
if(isset($parse['query']))
{
parse_str($parse['query'],$params);//返回的$params是一个数组
$path = $parse['path'];
$urlFormat = Url::getUrlFormat();
if( $urlFormat != 'get' ){
$path = preg_replace("/\/$this->pagename\/\d+/","",$path);
}
unset($params[$this->pagename]);
$url = $path.'?'.http_build_query($params);
}
else$url .= '?';
if(!empty($params))
{
$url .= '&';
}
$this->url1=$url.$this->pagename."=";
$this->url = $url. $this->pagename . '=' . $page.$fragment;
return $this->url ;
}
/**
* 针对ajax方式的特殊处理
*
* @access private
* @param mixed $page
* @param mixed $text
* @return mixed
*/
private function _get_link($page,$text)
{
$url=$this->_get_url($page);
if($this->ajax){
$onclick = preg_replace('/#page#/',$page,$this->ajaxFunction);
return "<a href='javascript:;' onclick='".$onclick."' page-index='".$page."'>$text</a> ";
}
else return "<a href=$url>$text</a> ";
}
/**
* 生成连接 无效
*
* @access private
* @param mixed $page
* @param mixed $text
* @return mixed
*/
private function _get_link1($page,$text){
$url=$this->_get_url($page);
return "<span href=$url class='disabled'>$text</span> ";
}
/**
* 反回第一面的连接
*
* @access private
* @param string $name
* @return mixed
*/
private function first_page($name="第一页"){
return $this->_get_link(1, $name);
}
/**
* 有省略的第一页
*
* @access private
* @return mixed
*/
private function first_page2(){
$plus=$this->plus;
if($this->page - $plus <= 1){
return "";
}else{
return $this->_get_link(1, 1)."<span class='pageMore'>...</span>\n";
}
}
/**
* 上一页连接
*
* @access private
* @param string $name
* @return mixed
*/
private function up_page($name="上一页"){
if($this->page>1){
return $this->_get_link($this->page - 1, $name);
}else{
return $this->_get_link1(1, $name);
}
}
/**
* 生成下一页
*
* @access private
* @param string $name
* @return mixed
*/
private function down_page($name="下一页"){
if ($this->page<$this->totalpage){
return $this->_get_link($this->page+1, $name);
}else{
return $this->_get_link1($this->page+1, $name);
}
}
/**
* 生成最后一页
*
* @access private
* @param string $name
* @return mixed
*/
private function last_page($name="最后一页"){
return $this->_get_link($this->totalpage, $name);
}
/**
* 生成样式2的"最后一页"
*
* @access private
* @return mixed
*/
private function last_page2(){
$plus=$this->plus;
if($this->page+$plus >= $this->totalpage){
return "";
}else{
return "<span class='pageMore'>...</span>\n".$this->_get_link($this->totalpage, $this->totalpage);
}
}
/**
* 生成中间的数字
*
* @access private
* @return mixed
*/
private function show_nums(){
$plus=$this->plus;
$content=" ";
$begin=$this->page-$plus;
$begin=$begin>=1?$begin:1;//开始的处理方法： 不能从负数开始
$end=($this->page+$plus >= $this->totalpage)?$this->totalpage:($this->page+$plus);//尾部的处理方法：不能超过总页数
if($begin>3){
$content .= $this->_get_link(1, 1).$this->_get_link(2, 2).'...';
}
else if($begin>2){
$content .= $this->_get_link(1, 1).$this->_get_link(2, 2);
}
else if($begin>1){
$content .= $this->_get_link(1, 1);
}
for($i=$begin;$i<=$end;$i++){
if($i==$this->page){
$content .= "<span class='current'>$i</span>\n";
}else{
$content.=$this->_get_link($i, $i);
}
}
if($end<$this->totalpage-1) $content .= '...'.$this->_get_link($this->totalpage, $this->totalpage);
else if($end<$this->totalpage) $content .= $this->_get_link($this->totalpage, $this->totalpage);
return $content;
}
/**
* 第一种样式
*
* @access private
* @return mixed
*/
private function show_1(){
//$return= $this->first_page();
$return="";
$return.= $this->up_page();
$return.=$this->show_nums();
$url1=$this->url1;
$return.= $this->down_page();
if($this->ajax){
$return.= " 共{$this->totalpage} 页 跳到第 <input style='width:24px;text-align:center' value='".$this->page."' onchange='$(this).next().attr(\"page-index\",this.value)'/> 页 <a href='javascript:;' page-index='".$this->page."'>确定</a>";
}else{
$rand = md5(time().rand(10000,99999));
$return.= " 共{$this->totalpage} 页 跳到第 <input id='page_input_".$rand."' style='width:24px;text-align:center' value='".$this->page."' /> 页 <a href='javascript:;' onclick='javascript:window.location.href=\"$url1\"+document.getElementById(\"page_input_".$rand."\").value;' >确定</a>";
}
//$return.= $this->last_page();
return $return;
}
/**
* 第二种样式
*
* @access private
* @return mixed
*/
private function show_2(){
$return= $this->up_page($name="<上一页");
$return.=" ";
//$return.= $this->first_page2($name="1");
$return.=" ";
$return.=$this->show_nums();
//$return.= $this->last_page2();
$return.=" ";
$return.= $this->down_page($name="下一页>");
return $return;
}
/**
* 第三种样式
*
* @access private
* @return mixed
*/
private function show_3(){
$return="总计 $this->total_nums 条记录 $this->page ／ $this->totalpage 页";
$return.=$this->first_page();
$return.=$this->up_page();
$return.=$this->down_page();
$return.=$this->last_page();
$url1=$this->url1;
$return.="到第 <select id='select' onchange='window.location.href=\"$url1\"+this.value'>";
for($i=1;$i<=$this->totalpage;$i++){
if ($i == $this->page){
$return.= "<option value='$i' selected>$i</option>";
}else{
$return.= "<option value='$i'>$i</option>";
}
}
$return.= "</select> 页 ";
return $return;
}
/**
* 第四种样式
*
* @access private
* @return mixed
*/
private function show_4(){
$return= $this->up_page($name="上一页");
$return.=" ";
$return.=$this->show_nums();
$return.=" ";
$return.= $this->down_page($name="下一页");
return $return;
}
private function show_5(){
$return= $this->up_page($name="上一页");
$return.=" ";
$return.="<span class='current'>".$this->page."</span>\n";
$return.=" ";
$return.= $this->down_page($name="下一页");
return $return;
}
/**
* 封装显示
*
* @access public
* @param int $num
* @return mixed
*/
public function show($num=1){
switch ($num){
case "2":
return $this->show_2();
break;
case "3":
return $this->show_3();
break;
case "4":
return $this->show_4();
break;
case "5":
return $this->show_5();
break;
default :
return $this->show_1();
break;
}
}
public function getTotalPage(){
return $this->totalpage;
}
}