thinkphp分页类改造
jerry thinkphp 2015年11月18日
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thinkphp自带的分页，没法通过配置让当前页页码显示在页码条中间（我的还是2.0,不知道3.0+可以了么），所以就改了下，效果还不错
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com> modified by 米国村长
// +----------------------------------------------------------------------
// $Id$
class Page extends Think {
// 起始行数
public $firstRow ;
// 列表每页显示行数
public $listRows ;
// 页数跳转时要带的参数
public $parameter ;
// 分页总页面数
protected $totalPages ;
// 总行数
protected $totalRows ;
// 当前页数
protected $nowPage ;
// 分页的栏的总页数
protected $coolPages ;
// 分页栏每页显示的页数
protected $rollPage ;
//这里将$page写成类的成员属性，其实不用，懒的改了
public $page;
// 分页显示定制
//protected $config = array('header'=>'条记录','prev'=>'上一页','next'=>'下一页','first'=>'第一页','last'=>'最后一页','theme'=>' %totalRow% %header% %nowPage%/%totalPage% 页 %upPage% %downPage% %first% %prePage% %linkPage% %nextPage% %end%');
protected $config = array('header'=>'条记录','prev'=>'上一页','next'=>'下一页','first'=>'第一页','last'=>'最后一页','theme'=>'<span >共 %totalRow% %header%</span> %upPage% %linkPage% %downPage%');
/**
+----------------------------------------------------------
* 架构函数
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @param array $totalRows 总的记录数
* @param array $listRows 每页显示记录数
* @param array $parameter 分页跳转的参数
+----------------------------------------------------------
*/
public function __construct($totalRows,$listRows,$parameter='') {
$this->totalRows = $totalRows;
$this->parameter = $parameter;
$this->rollPage = C('PAGE_ROLLPAGE');
$this->listRows = !empty($listRows)?$listRows:C('PAGE_LISTROWS');
$this->totalPages = ceil($this->totalRows/$this->listRows); //总页数
$this->coolPages = ceil($this->totalPages/$this->rollPage);
$this->nowPage = !empty($_GET[C('VAR_PAGE')]) ? $_GET[C('VAR_PAGE')]:1;
if(!empty($this->totalPages) && $this->nowPage>$this->totalPages) {
$this->nowPage = $this->totalPages;
}
$this->firstRow = $this->listRows*($this->nowPage-1);
}
public function setConfig($name,$value) {
if(isset($this->config[$name])) {
$this->config[$name] = $value;
}
}
/**
+----------------------------------------------------------
* 分页显示输出
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
*/
public function show() {
if(0 == $this->totalRows) return '';
$p = C('VAR_PAGE');
$nowCoolPage = ceil($this->nowPage/$this->rollPage);
$url = $_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':"?").$this->parameter;
$parse = parse_url($url);
if(isset($parse['query'])) {
parse_str($parse['query'],$params);
unset($params[$p]);
$url = $parse['path'].'?'.http_build_query($params);
}
//上下翻页字符串
$upRow = $this->nowPage-1;
$downRow = $this->nowPage+1;
if ($upRow>0){
$upPage="<a href='".$url."&".$p."=$upRow'>".$this->config['prev']."</a>";
}else{
$upPage="<span class='nextprev'>上一页</span>";
}
if ($downRow <= $this->totalPages){
$downPage="<a href='".$url."&".$p."=$downRow'>".$this->config['next']."</a>";
}else{
$downPage="<span class='nextprev'>下一页 </span>";
}
// << < > >> //
/*if($nowCoolPage == 1){
$theFirst = "";
$prePage = "";
}else{
$preRow = $this->nowPage-$this->rollPage;
$prePage = "<a href='".$url."&".$p."=$preRow' >上".$this->rollPage."页</a>";
$theFirst = "<a href='".$url."&".$p."=1' >".$this->config['first']."</a>";
}
if($nowCoolPage == $this->coolPages){
$nextPage = "";
$theEnd="";
}else{
$nextRow = $this->nowPage+$this->rollPage;
$theEndRow = $this->totalPages;
$nextPage = "<a href='".$url."&".$p."=$nextRow' >下".$this->rollPage."页</a>";
$theEnd = "<a href='".$url."&".$p."=$theEndRow' >".$this->config['last']."</a>";
}
*/
// 1 2 3 4 5
$linkPage = "";
if($totalpage < $this->rollPage){
for($i = 1;$i<=$this->totalPages;$i++){ //若页码数不够设置的显示页数 ，比如设置显示5页，但只有3页数据
if($i == $this->nowPage){
$linkPage .= "<span class='current'>".$i."</span>";
}else{
$linkPage .= "<a href='".$url."&".$p."=$i'>".$i."</a>";
}
}
}else{
$mid = ceil($this->rollPage/2);
if($this->nowPage >= $mid && $this->nowPage <= ($this->totalPages - $mid)){ //当前页在页码中间靠右时，保持左边有2个页码
$this->page = $this->nowPage - ($this->rollpage/2 - 1);//这个2使当前页保持在中间（每次显示5个页码时），如果一次显示7个页码，改成3即可保持当前页在中间
for($i = 1; $i <= $this->rollPage; $i++){
if($this->page == $this->nowPage){
$linkPage .= "<span class='current'>".$this->page."</span>";
}else{
$linkPage .= "<a href='".$url."&".$p."=$this->page'>".$this->page."</a>";
}
$this->page++;
}
}elseif($this->nowPage < $mid){ //当前页在coolPages为1时，并且当前页在页码中间靠左
for($i = 1; $i <= $this->rollPage; $i++){ //如1234567 当前页为3
$this->page = $i;
if($this->page == $this->nowPage){
$linkPage .= "<span class='current'>".$this->page."</span>";
}else{
$linkPage .= "<a href='".$url."&".$p."=$this->page'>".$this->page."</a>";
}
}
}elseif($this->nowPage > $this->totalPages - $mid){ //当前页在coolPages是最后一页时，直接循环出剩下的页面就行
for($i = $this->totalPages - $this->rollPage + 1; $i <= $this->totalPages; $i++){
$this->page = $i;
if($this->page == $this->nowPage){
$linkPage .= "<span class='current'>".$this->page."</span>";
}else{
$linkPage .= "<a href='".$url."&".$p."=$this->page'>".$this->page."</a>";
}
}
}
}
$pageStr = str_replace(
array('%header%','%nowPage%','%totalRow%','%totalPage%','%upPage%','%downPage%','%first%','%prePage%','%linkPage%','%nextPage%','%end%'),
array($this->config['header'],$this->nowPage,$this->totalRows,$this->totalPages,$upPage,$downPage,$theFirst,$prePage,$linkPage,$nextPage,$theEnd),$this->config['theme']);
return $pageStr;
}
}
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