PHP使用Mysqli类库实现完美分页效果的方法,mysqli类库
PHP使用Mysqli类库实现完美分页效果的方法,mysqli类库
本文实例讲述了PHP使用Mysqli类库实现完美分页效果的方法。分享给大家供大家参考,具体如下:
本篇文章是基于的是我的上篇文章《PHP数据库操作之基于Mysqli的数据库操作类库》而量身打造,怎么使用 M 类库中的 FetchAll 方法做出完美分页。
分页在我们每个项目中都是必不可少的,而且出现的频率非常之多。这样就要求我们程序员在项目中怎样去以最快的速度、最简洁的代码去实现分页方案。
分页的实现大部分是依据 URL 传入的参数(一般是page)来实现,比如:http://localhost/article.php?page=2 表示取第二页数据
建议:您在看本篇文章之时,请确保您已学习过我的上篇文章《PHP数据库操作之基于Mysqli的数据库操作类库》
相关mysql视频教程推荐:《mysql教程》
下面我们根据 M 类库来进行分页的讲解,博文中出现的代码,最后附有下载地址,包括测试数据库文件。
1、建立配置文件 config.inc.php
代码清单如下
<?php header('Content-Type:text/html;Charset=utf-8'); //设置header编码 define('ROOT_PATH', dirname(__FILE__)); //设置根目录 define('DB_HOST', 'localhost'); //数据库服务器地址 define('DB_USER', 'root'); //数据库用户名 define('DB_PWD', '×××');//数据库密码,请根据机器填写 define('DB_NAME', '×××'); //数据库名称,请根据机器填写 define('DB_PORT', '3306'); //数据库端口,请根据机器填写 function __autoload($className) { require_once ROOT_PATH . '/includes/'. ucfirst($className) .'.class.php'; //自动加载类库文件 } ?>
2、建立资讯测试文件 article.php
注:因本人 CSS 能力有限,所以为了演示功能,只使用了单纯的 HTML
代码清单及注释如下
<?php require 'config.inc.php'; //引入配置文件 $m = new M(); //实例化 M 类 $total = $m->Total('jzy_article'); //资讯文章总数 $page = new Page($total, 20); //实例化分页类 /* 注意事项: 1、实例分页 Page 类的时候,需要传两个参数:记录总数;每页显示的记录数。 2、当传入参数后,Page 类中有个setLimit()方法会自动计算出 SQL 中的 limit 值。比如:URL 参数中 page 为1的时候,limit 值为“0,20”;为2的时候,limit 值为“20,20”…… 3、计算出来的 $page->limit,必须放在 FetchAll 方法中的最后一位,详情请查看 FetchAll 方法 */ $data = $m->FetchAll("jzy_article", "title, source, writer, pubdate", "", "id DESC", $page->limit); //根据 M 类库中的 FetchAll 方法获取数据 ?> <style> /* 分页样式 */ #page {text-align:right; padding:10px;clear:both;}#page a {border:1px solid #666;padding:2px 5px;margin:0 2px;color:#3b6ea5;text-decoration:none;}#page a:hover,#page span.me {color:#fff;border:1px solid #000;background:#000;text-decoration:none;}#page span.disabled {border:1px solid #ccc;padding:2px 5px;margin:0 2px;color:#ccc;}#page span.me {padding:2px 5px;margin:0 2px;} </style> <table width="1000" border="1" style="border-collapse:collapse; font-size:13px;"> <tr height="30"> <th width="483">标题</th> <th width="141">来源</th> <th width="154">作者</th> <th width="194">添加时间</th> </tr> <?php foreach ($data as $v) { //循环取出数据 ?> <tr> <td> <?php echo $v['title']; ?></td> <td align="center"><?php echo $v['source']; ?></td> <td align="center"><?php echo $v['writer']; ?></td> <td align="center"><?php echo $v['pubdate']; ?></td> </tr> <?php } ?> <tr> <td id="page" colspan="4"><?php echo $page->fpage(); ?></td> <!-- 调出分页类 --> </tr> </table>
3、访问测试效果
打开浏览器,输入测试的url地址,你的浏览器应该会出现以下效果
更多关于PHP相关内容感兴趣的读者可查看本站专题:《php curl用法总结》、《PHP运算与运算符用法总结》、《PHP网络编程技巧总结》、《PHP基本语法入门教程》、《php操作office文档技巧总结(包括word,excel,access,ppt)》、《php日期与时间用法总结》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。
您可能感兴趣的文章:
PHP基于单例模式实现的mysql类
php封装的连接Mysql类及用法分析
一个php Mysql类 可以参考学习熟悉下
十二个常见的PHP+MySql类免费CMS系统
PHP实现基于mysqli的Model基类完整实例
PHP格式化MYSQL返回float类型的方法
php实现Mysql简易操作类
php简单操作mysql数据库的类
PHP实现的通过参数生成MYSQL语句类完整实例

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
