最近,在项目中要用到分页。分页功能是经常使用的一个功能,所以,对其以函数形式进行了封装。
// 分页分装<br>/**<br>* $pageType 分页类型 1是数字分页 2是文本分页<br>* 可以将$pageTotal,$page,$total等数据作为参数传递,或者在paging作为全局变量(推荐)<br>*/<br>function paging($pageType)<br>{<br> global $pageTotal,$page,$total;<br> if($pageType == 1)<br> {<br> echo '<div id="pagenum">';<br> echo'<ul>';<br> for($i=0; $i { <br> if($page == ($i+1))<br> {<br> echo '<li><a href="blogfriends.php?page='.(%24i+1).'">'.($i+1).'</a></li>';<br> }<br> else<br> {<br> echo '<li><a href="blogfriends.php?page='.(%24i+1).'">'.($i+1).'</a></li>';<br> }<br> }<br> echo'</ul>';<br> echo'</div>';<br><br> }<br> else if($pageType == 2)<br> {<br> echo '<div id="pagetext">';<br> echo '<ul>';<br> echo '<li>'.$page.'/'.$pageTotal.'页 | </li>';<br> echo '<li>共有<strong>'.$total .'</strong>个会员 | </li>';<br> // 第一页<br> if($page == 1)<br> {<br> echo '<li>首页 | </li>';<br> echo '<li>上一页 | </li>';<br> }<br> else<br> {<br> // $_SERVER["SCRIPT_NAME"]获取当前的脚本名字,方便移植<br> // 也可以自定义常量,常量值和脚本文件名一致<br> echo '<li> <a href="'.%24_SERVER%5B" script_name>首页 </a>| </li>';<br> echo '<li> <a href="'.%24_SERVER%5B" script_name>上一页 </a>| </li>';<br> }<br> // 最后一页<br> if($page == $pageTotal)<br> {<br> echo '<li>下一页 | </li>';<br> echo '<li>尾页 | </li>';<br> }<br> else<br> {<br> echo '<li> <a href="'.%24_SERVER%5B" script_name>下一页 </a>| </li>';<br> echo '<li> <a href="'.%24_SERVER%5B" script_name>尾页 </a>| </li>';<br> } <br> echo '</ul>';<br> echo '</div>';<br> }<br>}
参数解释:
$pageTotal是总页数,$page是当前页,$total是从数据库中获取的数据总数;
为了简化,将参数全部封装
// 分页参数分装<br>/**<br>* $sql 可以 获取数据总数的一个sql语句<br>* $size 每一页显示条数<br>*/<br>function pageParam($sql,$size)<br>{<br> // 将所有涉及的参数设置全局变量<br> // $pagestart 某一页从哪里开始<br> // $total 总记录数 $page 某一页 $pageTotal 总页数<br> global $pagestart,$pagesize,$total,$page,$pageTotal;<br> $pagesize = $size;<br> // 获取数据总数<br> $total = mysql_num_rows(queryDB($sql));<br><br> // 错误处理,先判断是否存在<br> if(isset($_GET['page']))<br> {<br> // 具体某一页<br> $page = $_GET['page'];<br> // 判断是否为空(0是空)/小于0/是否是数字<br> if(empty($page) || $page {<br> $page = 1;<br> }<br> else<br> {<br> $page = intval($page); //取整,防止小数出现<br> }<br> <br> }<br> else<br> {<br> // 初始化显示第1页<br> $page = 1;<br> }<br><br> // 数据库清零<br> if($total == 0)<br> {<br> // 设置为1<br> $pageTotal = 1;<br> }<br> else<br> {<br> // 分页的总页数(进一取整处理)<br> $pageTotal = ceil($total / $pagesize);<br> }<br><br> // 页数大于总页码$total<br> if($page > $pageTotal)<br> {<br> $page = $pageTotal;<br> }<br> // 当页从某一条记录开始<br> $pagestart = ($page - 1) * $pagesize;<br>}
参数解释:
$pagestart是当页从某一条记录开始,$pagesize是每页显示的记录数
在使用中,先调用pageParam,再调用paging
/**<br>* 第一个 可以 获取数据总数的一个sql语句<br>* 第二个 每一页显示条数<br>*/<br>pageParam("select userid from user",2);
// 分页类型 1是数字分页 2是文本分页<br> paging(2);<br>?>
调用的位置根据具体情况选择,文本分页如下:
// 分页类型 1是数字分页 2是文本分页<br> paging(1);<br> ?>
数字分页如下:
样式自行调整。

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7


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

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

WebStorm Mac version
Useful JavaScript development tools

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

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.