How to use PHP to develop simple online navigation functions
How to use PHP to develop simple online navigation functions
Navigation websites are very common in modern society. They help users quickly find the information they need and provide quick links. to other useful websites. Using PHP to develop simple online navigation functions can help us build a customizable and easy-to-maintain navigation website. This article will introduce how to use PHP to write a simple online navigation website and provide specific code examples.
Step 1: Create a database table
First, we need to create a database to store navigation links. Create a database named "navigation" in MySQL, and then create a table named "links" in the database. The table should contain the following fields: id (auto-incrementing primary key), title (link title), url (link address), order (sort).
CREATE DATABASE navigation;
USE navigation;
CREATE TABLE links (
id INT PRIMARY KEY AUTO_INCREMENT,
title VARCHAR(50) NOT NULL,
url VARCHAR(100) NOT NULL,
order INT NOT NULL
);Step 2: Connect to the database
At the beginning of the PHP file, we need to connect to the database. Create a file called "db_connect.php" and add the following code:
<?php
$servername = "localhost";
$username = "root";
$password = "password";
$dbname = "navigation";
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
?>Make sure to change "root" and "password" to your database username and password.
Step 3: Add a link to the database
Now we can write a form to add a new link to the database. Create a file called "add_link.php" and add the following code:
<?php
include 'db_connect.php';
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$title = $_POST["title"];
$url = $_POST["url"];
$order = $_POST["order"];
$sql = "INSERT INTO links (title, url, order) VALUES ('$title', '$url', '$order')";
if ($conn->query($sql) === TRUE) {
echo "Link added successfully";
} else {
echo "Error adding link: " . $conn->error;
}
}
$conn->close();
?>
<!DOCTYPE html>
<html>
<head>
<title>Add Link</title>
</head>
<body>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
Title: <input type="text" name="title" required><br>
URL: <input type="text" name="url" required><br>
Order: <input type="number" name="order" required><br>
<input type="submit" value="Add Link">
</form>
</body>
</html>This file will create a form where the user can enter the link's title, URL, and sequence number. When the user submits the form, a new link record is added to the database.
Step 4: Display the linked list
Finally, we need to write a file to display the linked list in the database. Create a file called "index.php" and add the following code:
<?php
include 'db_connect.php';
$sql = "SELECT * FROM links ORDER BY order";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
echo "<a href='" . $row["url"] . "'>" . $row["title"] . "</a><br>";
}
} else {
echo "No links found";
}
$conn->close();
?>This file will retrieve all links from the database and display them as a list of hyperlinks.
After completing the above steps, you can organize these files into a folder and upload them to your web server. When users visit "index.php" they will see a list of all links in the database. Users can also add new links by visiting "add_link.php".
During development, you can extend and customize the code according to your needs. You can add the ability to edit and delete links, or design a prettier interface. By developing in PHP, you can easily extend and maintain this simple online navigation functionality.
The above is the detailed content of How to use PHP to develop simple online navigation functions. For more information, please follow other related articles on the PHP Chinese website!
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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1664
14
1423
52
1317
25
1268
29
1244
24
Teach you step by step to develop your own forum website using PHP
Oct 28, 2023 am 08:23 AM
With the rapid development of the Internet and people's increasing demand for information exchange, forum websites have become a common online social platform. Developing a forum website of your own can not only meet your own personalized needs, but also provide a platform for communication and sharing, benefiting more people. This article will teach you step by step how to use PHP to develop your own forum website. I hope it will be helpful to beginners. First, we need to clarify some basic concepts and preparations. PHP (HypertextPreproces
How to use Memcache in PHP development?
Nov 07, 2023 pm 12:49 PM
In web development, we often need to use caching technology to improve website performance and response speed. Memcache is a popular caching technology that can cache any data type and supports high concurrency and high availability. This article will introduce how to use Memcache in PHP development and provide specific code examples. 1. Install Memcache To use Memcache, we first need to install the Memcache extension on the server. In CentOS operating system, you can use the following command
How to develop a hotel booking website using PHP
Oct 28, 2023 am 08:19 AM
How to use PHP to develop a hotel booking website With the development of the Internet, more and more people are beginning to arrange their travels through online booking. As one of the common online booking services, hotel booking websites provide users with a convenient and fast way to book hotels. This article will introduce how to use PHP to develop a hotel reservation website, allowing you to quickly build and operate your own online hotel reservation platform. 1. System requirements analysis Before starting development, we need to conduct system requirements analysis first to clarify what the website we want to develop needs to have.
Describe the SOLID principles and how they apply to PHP development.
Apr 03, 2025 am 12:04 AM
The application of SOLID principle in PHP development includes: 1. Single responsibility principle (SRP): Each class is responsible for only one function. 2. Open and close principle (OCP): Changes are achieved through extension rather than modification. 3. Lisch's Substitution Principle (LSP): Subclasses can replace base classes without affecting program accuracy. 4. Interface isolation principle (ISP): Use fine-grained interfaces to avoid dependencies and unused methods. 5. Dependency inversion principle (DIP): High and low-level modules rely on abstraction and are implemented through dependency injection.
How to use PHP to develop an online tutoring service platform
Oct 28, 2023 am 09:01 AM
How to use PHP to develop an online tutoring service platform. With the rapid development of the Internet, online tutoring service platforms have attracted more and more people's attention and demand. Parents and students can easily find suitable tutors through such a platform, and tutors can also better demonstrate their teaching abilities and advantages. This article will introduce how to use PHP to develop an online tutoring service platform. First, we need to clarify the functional requirements of the platform. An online tutoring service platform needs to have the following basic functions: Registration and login system: users can
How to implement version control and code collaboration in PHP development?
Nov 02, 2023 pm 01:35 PM
How to implement version control and code collaboration in PHP development? With the rapid development of the Internet and the software industry, version control and code collaboration in software development have become increasingly important. Whether you are an independent developer or a team developing, you need an effective version control system to manage code changes and collaborate. In PHP development, there are several commonly used version control systems to choose from, such as Git and SVN. This article will introduce how to use these tools for version control and code collaboration in PHP development. The first step is to choose the one that suits you
How to use Memcache for efficient data writing and querying in PHP development?
Nov 07, 2023 pm 01:36 PM
How to use Memcache for efficient data writing and querying in PHP development? With the continuous development of Internet applications, the requirements for system performance are getting higher and higher. In PHP development, in order to improve system performance and response speed, we often use various caching technologies. One of the commonly used caching technologies is Memcache. Memcache is a high-performance distributed memory object caching system that can be used to cache database query results, page fragments, session data, etc. By storing data in memory
How to use PHP to develop the coupon function of the ordering system?
Nov 01, 2023 pm 04:41 PM
How to use PHP to develop the coupon function of the ordering system? With the rapid development of modern society, people's life pace is getting faster and faster, and more and more people choose to eat out. The emergence of the ordering system has greatly improved the efficiency and convenience of customers' ordering. As a marketing tool to attract customers, the coupon function is also widely used in various ordering systems. So how to use PHP to develop the coupon function of the ordering system? 1. Database design First, we need to design a database to store coupon-related data. It is recommended to create two tables: one
