PHP Pagination Tips Revealed: Make Your Web Page Easier to Use

With the rapid development of the Internet, the data presented on web pages is becoming more and more abundant, and users’ demand for information is also growing. The ensuing problem is how to better display it to users when the amount of data in the web page is too large, thereby improving user experience. Paging technology has become one of the important methods to solve this problem.

In Web development, PHP is a widely used server-side scripting language that can flexibly achieve data management and display when combined with a database. PHP paging technology can help us display data in reasonable paging in web pages, improving the website's response speed and user experience. The following will introduce some PHP paging techniques and specific code examples to help you better apply them to your own website.

Principle of paging

The basic principle of paging is to divide a large amount of data into multiple pages for display. Users can browse data on different pages by clicking on the page navigation. In PHP, we can dynamically generate paging links by calculating parameters such as the total amount of data, the amount of data displayed on each page, and the current number of pages, and load the corresponding data according to the number of pages the user clicks.

PHP paging skills

1. Get the total data volume

Before paging, we first need to get the total data volume in the database so that Calculate how many total pages need to be displayed. You can use the following SQL statement to obtain the amount of data:

SELECT COUNT(*) AS total FROM table_name;

2. Calculate the total number of pages

Based on the total data amount and the amount of data displayed on each page, you can calculate the total number of pages. How many pages need to be displayed, the calculation formula is as follows:

$total_pages = ceil($total_data / $per_page);

3. Generate paging links

Based on the total number of pages, we can dynamically generate paging links so that users can Click on the links to browse different pages of data. Usually, links similar to "Home Page", "Previous Page", "Next Page", "Last Page" are generated, as well as page number links within a certain range.

4. Query the current page data

Use the LIMIT statement to query the data that needs to be displayed on the current page according to the page number clicked by the user, for example:

SELECT * FROM table_name LIMIT $start_from, $per_page;

Specific code example

The following is a simple PHP paging example code, assuming that each page displays 10 pieces of data:

<?php

//连接数据库
$connection = mysqli_connect("localhost", "username", "password", "database");

//获取总数据量
$total_data = mysqli_query($connection, "SELECT COUNT(*) AS total FROM table_name");
$row = mysqli_fetch_assoc($total_data);
$total_pages = ceil($row['total'] / 10);

//获取当前页码
if (isset($_GET['page'])) {
    $page = $_GET['page'];
} else {
    $page = 1;
}

$start_from = ($page - 1) * 10;

//查询当前页数据
$result = mysqli_query($connection, "SELECT * FROM table_name LIMIT $start_from, 10");

//展示数据
while ($row = mysqli_fetch_assoc($result)) {
    //显示数据内容
}

//生成分页链接
for ($i = 1; $i <= $total_pages; $i++) {
    echo "<a href='?page=$i'>$i</a> ";
}

?>

Through the above example, we can implement a simple PHP paging function, so that The web page displays data more conveniently and clearly. When the amount of data in the web page is large, using paging technology can improve the web page loading speed, reduce user waiting time, and improve user experience. I hope the above content can help you better apply PHP paging technology and make your web pages easier to use.

The above is the detailed content of PHP Pagination Tips Revealed: Make Your Web Page Easier to Use. For more information, please follow other related articles on the PHP Chinese website!