search
HomeBackend DevelopmentPHP TutorialUse PHP to implement a simple paging class and its detailed usage

本文实例讲述了PHP实现的简单分页类及其详细的使用方法。分享给大家供大家参考,具体如下:

<?php
/*
 * 使用:
 * $page = new Page(连接符,查询语句,当前页码,每页大小,页码符)
 * 连接符:一个MYSQL连接标识符,如果该参数留空,则使用最近一个连接
 * 查询语句:SQL语句
 * 当前页码:指定当前是第几页
 * 每页大小:每页显示的记录数
 * 页码符:指定当前页面URL格式
 *
 * 使用例子:
 * $sql = "select * from aa";
 * $page = new Page($conn,$sql,$_GET[&#39;page&#39;],4,"?page=");
 *
 * 获得当前页码
 * $page->page;
 *
 * 获得总页数
 * $page->pageCount;
 *
 * 获得总记录数
 * $page->rowCount;
 *
 * 获得本页记录数
 * $page->listSize;
 *
 * 获得记录集
 * $page->list;
 * 记录集是一个2维数组,例:list[0][&#39;id&#39;]访问第一条记录的id字段值.
 *
 * 获得页码列表
 * $page->getPageList();
 */
class Page
{
  //基础数据
  var $sql;
  var $page;
  var $pageSize;
  var $pageStr;
  //统计数据
  var $pageCount; //页数
  var $rowCount; //记录数
  //结果数据
  var $list = array(); //结果行数组
  var $listSize ;
  //构造函数
  function Page($conn,$sql_in,$page_in,$pageSize_in,$pageStr_in)
  {
    $this->sql = $sql_in;
    $this->page = intval($page_in);
    $this->pageSize = $pageSize_in;
    $this->pageStr = $pageStr_in;
    //页码为空或小于1的处理
    if(!$this->page||$this->page<1)
    {
      $this->page = 1;
    }
    //查询总记录数
    $rowCountSql = preg_replace("/([\w\W]*?select)([\w\W]*?)(from[\w\W]*?)/i","$1 count(0) $3",$this->sql);
    if(!$conn)
      $rs = mysql_query($rowCountSql) or die("bnc.page: error on getting rowCount.");
    else
      $rs = mysql_query($rowCountSql,$conn) or die("bnc.page: error on getting rowCount.");
    $rowCountRow = mysql_fetch_row($rs);
    $this->rowCount=$rowCountRow[0];
    //计算总页数
    if($this->rowCount%$this->pageSize==0)
      $this->pageCount = intval($this->rowCount/$this->pageSize);
    else
      $this->pageCount = intval($this->rowCount/$this->pageSize)+1;
    //SQL偏移量
    $offset = ($this->page-1)*$this->pageSize;
    if(!$conn)
   $rs = mysql_query($this->sql." limit $offset,".$this->pageSize) or 
   die("bnc.page: error on listing.");
    else
 $rs = mysql_query($this->sql." limit $offset,".$this->pageSize,$conn) or 
 die("bnc.page: error on listing.");
    while($row=mysql_fetch_array($rs))
    {
      $this->list[]=$row;
    }
    $this->listSize = count($this->list);
  }
  /*
   * getPageList方法生成一个较简单的页码列表
   * 如果需要定制页码列表,可以修改这里的代码,或者使用总页数/总记录数等信息进行计算生成.
   */
  function getPageList()
  {
    $firstPage;
    $previousPage;
    $pageList;
    $nextPage;
    $lastPage;
    $currentPage;
    //如果页码>1则显示首页连接
    if($this->page>1)
    {
      $firstPage = "<a href=\"".$this->pageStr."1\">首页</a>";
    }
    //如果页码>1则显示上一页连接
    if($this->page>1)
    {
      $previousPage = "<a href=\"".$this->pageStr.($this->page-1)."\">上一页</a>";
    }
    //如果没到尾页则显示下一页连接
    if($this->page<$this->pageCount)
    {
      $nextPage = "<a href=\"".$this->pageStr.($this->page+1)."\">下一页</a>";
    }
    //如果没到尾页则显示尾页连接
    if($this->page<$this->pageCount)
    {
      $lastPage = "<a href=\"".$this->pageStr.$this->pageCount."\">尾页</a>";
    }
    //所有页码列表
    for($counter=1;$counter<=$this->pageCount;$counter++)
    {
      if($this->page == $counter)
      {
        $currentPage = "<b>".$counter."</b>";
      }
      else
      {
        $currentPage = " "."<a href=\"".$this->pageStr.$counter."\">".$counter."</a>"." ";
      }
      $pageList .= $currentPage;
    }
    return $firstPage." ".$previousPage." ".$pageList." ".$nextPage." ".$lastPage." ";
  }
}
?>

   用法示例:

<?php
@$db = mysql_connect(&#39;localhost&#39;, &#39;root&#39;, &#39;123456&#39;) or
    die("Could not connect to database.");//连接数据库
mysql_query("set names &#39;utf8&#39;");//输出中文
mysql_select_db(&#39;test&#39;);    //选择数据库
$sql = "select * from `users`"; //一个简单的查询
$page = new Page(&#39;&#39;,$sql,$_GET[&#39;page&#39;],5,"?page=");
$rows = $page->list;
foreach($rows as $row)
{
  echo $row[&#39;UserName&#39;]."<br>";
}
echo $page->getPageList(); //输出分页列表
?>


分页视频教程PHP+Mysql分页简单教程

Use PHP to implement a simple paging class and its detailed usage

视频链接地址:http://www.php.cn/course/116.html

以上就是PHP实现的简单分页类及用法示例 php分页跳转 php分页循环 php数据分的内容,更多相关内容请关注PHP中文网(www.php.cn)!

相关文章:

php分页 PHP分页显示制作详细讲解

php分页类代码

php 分页原理详解

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
The Continued Use of PHP: Reasons for Its EnduranceThe Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python: Exploring Their Similarities and DifferencesPHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

PHP and Python are both high-level programming languages ​​that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP and Python: Different Paradigms ExplainedPHP and Python: Different Paradigms ExplainedApr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP and Python: A Deep Dive into Their HistoryPHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

Choosing Between PHP and Python: A GuideChoosing Between PHP and Python: A GuideApr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Frameworks: Modernizing the LanguagePHP and Frameworks: Modernizing the LanguageApr 18, 2025 am 12:14 AM

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHP's Impact: Web Development and BeyondPHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values ​​and handle functions that may return null values.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Tools

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool