How to use PHP to implement the navigation menu function of CMS system

How to use PHP to implement the navigation menu function of the CMS system

When developing a CMS system, the navigation menu is an essential function. It can help users navigate different pages on the website and provide a better user experience. This article will introduce how to use PHP to implement the navigation menu function of the CMS system, and attach a code example.

First, we need to create a navigation menu table in the database. The structure of the table can contain the following fields: id, name, link, and sort.

Sample code:

CREATE TABLE navigation_menu (
  id INT(11) AUTO_INCREMENT PRIMARY KEY,
  name VARCHAR(50) NOT NULL,
  link VARCHAR(100) NOT NULL,
  sort_order INT(11) NOT NULL
);

Next, we can use PHP to connect to the database and get the data from the navigation menu table. Use the following code snippet to implement this step:

<?php
// 连接到数据库
$connection = mysqli_connect("localhost", "username", "password", "database_name");

// 检查连接是否成功
if (!$connection) {
    die("连接数据库失败：" . mysqli_connect_error());
}

// 获取导航菜单项
$query = "SELECT * FROM navigation_menu ORDER BY sort_order";
$result = mysqli_query($connection, $query);

// 检查结果集是否为空
if (mysqli_num_rows($result) > 0) {
    // 输出导航菜单
    while ($row = mysqli_fetch_assoc($result)) {
        echo '<a href="' . $row["link"] . '">' . $row["name"] . '</a>';
    }
} else {
    echo "导航菜单为空";
}

// 关闭数据库连接
mysqli_close($connection);
?>

The above code first connects to the database and then executes a SELECT query to obtain the data for the navigation menu. Query results are sorted in sort order. Next, we use the mysqli_fetch_assoc function to fetch the data for each row from the result set and output it as a hyperlink on the page.

Before displaying the navigation menu, we need to insert the above code at the appropriate location on the page. Insert this code on every page of your website to implement a global navigation menu. You can also encapsulate the code into a separate PHP file, and then include the file on the page where the navigation menu needs to be displayed.

Finally, we can add menu items to the CMS system as needed. You can use the following code to insert data into the navigation menu table:

<?php
// 连接到数据库
$connection = mysqli_connect("localhost", "username", "password", "database_name");

// 检查连接是否成功
if (!$connection) {
    die("连接数据库失败：" . mysqli_connect_error());
}

// 插入菜单项
$query = "INSERT INTO navigation_menu (name, link, sort_order) VALUES ('菜单名称', '菜单链接', 1)";
if (mysqli_query($connection, $query)) {
    echo "菜单项插入成功";
} else {
    echo "插入错误：" . mysqli_error($connection);
}

// 关闭数据库连接
mysqli_close($connection);
?>

The above code will insert a menu item into the navigation menu table, including menu name, menu link and sorting. You can modify the value in the insert statement according to actual needs.

Through the above steps, we successfully implemented the navigation menu function of the CMS system using PHP. The code can be appropriately modified and expanded according to actual needs to meet different project requirements. Hope this article is helpful to you!

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