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HomeBackend DevelopmentPHP TutorialPHP使用Mysqli类库实现完美分页效果的方法_PHP

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》

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

<&#63;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
}
&#63;>

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

<&#63;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", $page->limit); //根据 M 类库中的 FetchAll 方法获取数据
&#63;>
<style>
/* 分页样式 */
#page {text-align:right;  padding:10px;clear:both;}#page a {border:1px solid #666;padding:2px 5px;margin:0 2px;color:#3b6ea5;text-decoration:none;}#page a:hover,#page span.me {color:#fff;border:1px solid #000;background:#000;text-decoration:none;}#page span.disabled {border:1px solid #ccc;padding:2px 5px;margin:0 2px;color:#ccc;}#page span.me {padding:2px 5px;margin:0 2px;}
</style>
<table width="1000" border="1" style="border-collapse:collapse; font-size:13px;">
<tr height="30">
  <th width="483">标题</th>
  <th width="141">来源</th>
  <th width="154">作者</th>
  <th width="194">添加时间</th>
</tr>
<&#63;php
foreach ($data as $v) { //循环取出数据
&#63;>
<tr>
  <td> <&#63;php echo $v['title']; &#63;></td>
  <td align="center"><&#63;php echo $v['source']; &#63;></td>
  <td align="center"><&#63;php echo $v['writer']; &#63;></td>
  <td align="center"><&#63;php echo $v['pubdate']; &#63;></td>
</tr>
<&#63;php
}
&#63;>
<tr>
  <td id="page" colspan="4"><&#63;php echo $page->fpage(); &#63;></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。

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