How does thinkphp achieve paging effect? Writing and using paging classes (code examples)

The content of this article is to introduce how thinkphp can achieve the paging effect? Writing and using paging classes (code examples). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

We want to achieve the paging effect as shown below:

This paging class is modified based on the paging class built into the thinkphp framework;

Some designs of the original paging class are not very convenient in actual use;

1. Pagination is not displayed when there is only one page of content;

2. The original paging class is on the current page When it is the first page and the last page, the buttons for the first page and the last page are not displayed;

3. When the number of pages is relatively small, the first page and the last page are not displayed. Page button;

4. The parent p that wraps the paging content has no class;

5. The above problems have been modified one by one as follows;

6. If there is no data Do not display paging. If there is one page or more content, paging will be displayed;

7. The first and last page buttons are displayed by default, but when the current page is the first and last page, the button is clicked. No effect;

8. The homepage and last page buttons are displayed by default;

9. Add a class named page to the parent p that wraps the paging content;

Display The total number of content items found;

Sample environment: thinkphp3.2.3;

Paging directory: /Thinkphp/Library/Org/ Bjy/Page.class.php

The paging class code is as follows:

<?php // +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 麦当苗儿 <zuojiazi@vip.qq.com> <http:>
// +----------------------------------------------------------------------
/*
 * PHP分页类
 * 修改者：白俊遥
 * 日  期：2015.5.10
 * 邮  箱：baijunyao@baijunyao.com
 * 博  客：http://baijunyao.com
 */
namespace Org\Bjy;
class Page{
    public $firstRow; // 起始行数
    public $listRows; // 列表每页显示行数
    public $parameter; // 分页跳转时要带的参数
    public $totalRows; // 总行数
    public $totalPages; // 分页总页面数
    public $rollPage   = 5;// 分页栏每页显示的页数
    public $lastSuffix = true; // 最后一页是否显示总页数
    private $p       = 'p'; //分页参数名
    private $url     = ''; //当前链接URL
    private $nowPage = 1;
    // 分页显示定制
    private $config  = array(
        'header' => '<span>共 %TOTAL_ROW% 条记录</span>',
        'first'   => '首页',
        'prev'   => '上一页',
        'next'   => '下一页',
        'last'   => '末页',
        'theme'  => '%FIRST% %UP_PAGE% %LINK_PAGE% %DOWN_PAGE% %END% %HEADER%',
    );
    /**
     * 架构函数
     * @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=20, $parameter = array()) {
        C('VAR_PAGE') && $this->p = C('VAR_PAGE'); //设置分页参数名称
        /* 基础设置 */
        $this->totalRows  = $totalRows; //设置总记录数
        $this->listRows   = $listRows;  //设置每页显示行数
        $this->parameter  = empty($parameter) ? $_GET : $parameter;
        $this->nowPage    = empty($_GET[$this->p]) ? 1 : intval($_GET[$this->p]);
        $this->nowPage    = $this->nowPage>0 ? $this->nowPage : 1;
        $this->firstRow   = $this->listRows * ($this->nowPage - 1);
    }
    /**
     * 定制分页链接设置
     * @param string $name  设置名称
     * @param string $value 设置值
     */
    public function setConfig($name,$value) {
        if(isset($this->config[$name])) {
            $this->config[$name] = $value;
        }
    }
    /**
     * 生成链接URL
     * @param  integer $page 页码
     * @return string
     */
    private function url($page){
        return str_replace(urlencode('[PAGE]'), $page, $this->url);
    }
    /**
     * 组装分页链接
     * @return string
     */
    public function show() {
        if(0 == $this->totalRows) return '';
        /* 生成URL */
        $this->parameter[$this->p] = '[PAGE]';
        $this->url = U(MODULE_NAME.'/'.CONTROLLER_NAME.'/'.ACTION_NAME, $this->parameter);
        /* 计算分页信息 */
        $this->totalPages = ceil($this->totalRows / $this->listRows); //总页数
        if(!empty($this->totalPages) && $this->nowPage > $this->totalPages) {
            $this->nowPage = $this->totalPages;
        }
        /* 计算分页零时变量 */
        $now_cool_page      = $this->rollPage/2;
        $now_cool_page_ceil = ceil($now_cool_page);
        //上一页
        $up_row  = $this->nowPage - 1;
        $up_page = $up_row > 0 ? '<a>url($up_row) . '">' . $this->config['prev'] . '</a>' : '<a>' . $this->config['prev'] . '</a>';
        //下一页
        $down_row  = $this->nowPage + 1;
        $down_page = ($down_row totalPages) ? '<a>url($down_row) . '">' . $this->config['next'] . '</a>' : '<a>' . $this->config['next'] . '</a>';
        //第一页
        $the_first = '<a>url(1) . '">' . $this->config['first'] . '</a>';
        //最后一页
        $the_end = '<a>url($this->totalPages) . '">' . $this->config['last'] . '</a>';
        //数字连接
        $link_page = "";
        for($i = 1; $i rollPage; $i++){
            if(($this->nowPage - $now_cool_page) nowPage + $now_cool_page - 1) >= $this->totalPages){
                $page = $this->totalPages - $this->rollPage + $i;
            }else{
                $page = $this->nowPage - $now_cool_page_ceil + $i;
            }
            if ($page>0) {
                if($page != $this->nowPage){
                    if($page totalPages){
                        $link_page .= '<a>url($page) . '">' . $page . '</a>';
                    }else{
                        break;
                    }
                }else{
                    $link_page .= '<span>' . $page . '</span>';
                }
            }
        }
        //替换分页内容
        $page_str = str_replace(
            array('%HEADER%', '%NOW_PAGE%', '%UP_PAGE%', '%DOWN_PAGE%', '%FIRST%', '%LINK_PAGE%', '%END%', '%TOTAL_ROW%', '%TOTAL_PAGE%'),
            array($this->config['header'], $this->nowPage, $up_page, $down_page, $the_first, $link_page, $the_end, $this->totalRows, $this->totalPages),
            $this->config['theme']);
        return '<div>'.$page_str.'</div>';
    }
}</http:>

Paging class call:

$count=$this->where($where)->count();
$page=new \Org\Bjy\Page($count,$limit);
$list=$this->where($where)->order('addtime desc')->limit($page->firstRow.','.$page->listRows)->select();
$show=$page->show();

Paging class css

.b-page {
  background: #fff;
  box-shadow: 0px 1px 2px 0px #E2E2E2;
}
.page {
  width: 100%;
  padding: 30px 15px;
  background: #FFF;
  text-align: center;
  overflow: hidden;
}
.page .first,
.page .prev,
.page .current,
.page .num,
.page .current,
.page .next,
.page .end {
  padding: 8px 16px;
  margin: 0px 5px;
  display: inline-block;
  color: #008CBA;
  border: 1px solid #F2F2F2;
  border-radius: 5px;
}
.page .first:hover,
.page .prev:hover,
.page .current:hover,
.page .num:hover,
.page .current:hover,
.page .next:hover,
.page .end:hover {
  text-decoration: none;
  background: #F8F5F5;
}
.page .current {
  background-color: #008CBA;
  color: #FFF;
  border-radius: 5px;
  border: 1px solid #008CBA;
}
.page .current:hover {
  text-decoration: none;
  background: #008CBA;
}
.page .not-allowed {
  cursor: not-allowed;
}

Usage of paging class The method is the same as the original thinkphp; specific reference: thinkphp manual-data paging (http://document.thinkphp.cn/manual_3_2.html#data_page)

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