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How to create a simple blog using PHP

王林

Sep 24, 2023 am 08:25 AM

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How to create a simple blog using PHP

1. Introduction
With the rapid development of the Internet, blogs have become a way for people to share experiences, record life and An important way to express your point of view. This article will introduce how to use PHP to create a simple blog, with specific code examples.

2. Preparation
Before you start, you need to have the following development environment:

A computer with a PHP interpreter and a Web server (such as Apache) installed
A database management system, such as MySQL
A text editor or IDE

3. Create database and tables
First, we need to create a database to Store blog posts and related information. You can use MySQL's command line tool or graphical interface (such as phpMyAdmin) to create a database. The following is a sample SQL command to create a database:

CREATE DATABASE blog;

Next, we create a file named articles# The ## table is used to store information about blog posts, including title, content, author, and publication time. The following is a sample SQL command to create the articles table:

USE blog;

CREATE TABLE articles (
    id INT PRIMARY KEY AUTO_INCREMENT,
    title VARCHAR(255) NOT NULL,
    content TEXT NOT NULL,
    author VARCHAR(50) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

4. Create the web front-end

After creating the database and table, we start to create the front-end page of the blog. First, we create a file named
index.php and add the following code at the beginning of the file:

<?php
// 连接数据库
$host = 'localhost';
$username = 'root';
$password = '';
$database = 'blog';

$conn = new mysqli($host, $username, $password, $database);
if ($conn->connect_error) {
    die('数据库连接失败：' . $conn->connect_error);
}
?>

The above code is used to connect to the database we created.

Next, we write HTML and PHP code in the

index.php file to display the blog post list and the content of a single post. The following is a sample code:

<!DOCTYPE html>
<html>
<head>
    <title>我的博客</title>
</head>
<body>
    <h1 id="欢迎访问我的博客">欢迎访问我的博客！</h1>

    <h2 id="最新文章">最新文章</h2>
    <?php
    // 查询最新的5篇文章
    $query = "SELECT * FROM articles ORDER BY created_at DESC LIMIT 5";
    $result = $conn->query($query);

    if ($result->num_rows > 0) {
        while ($row = $result->fetch_assoc()) {
            echo '<h3 id="row-title">' . $row['title'] . '</h3>';
            echo '<p>' . $row['content'] . '</p>';
            echo '<p>作者：' . $row['author'] . '</p>';
            echo '<hr>';
        }
    } else {
        echo '暂无文章';
    }
    ?>

    <h2 id="文章列表">文章列表</h2>
    <ul>
        <?php
        // 查询所有文章
        $query = "SELECT * FROM articles";
        $result = $conn->query($query);

        if ($result->num_rows > 0) {
            while ($row = $result->fetch_assoc()) {
                echo '<li><a href="article.php?id=' . $row['id'] . '">' . $row['title'] . '</a></li>';
            }
        } else {
            echo '暂无文章';
        }
        ?>
    </ul>
</body>
</html>

The above code will dynamically generate web page content based on the article list in the database.

5. Create an article details page

We also need to create a file named
article.php to display the detailed content of a single article. The following is a sample code:

<!DOCTYPE html>
<html>
<head>
    <title>文章详情</title>
</head>
<body>
    <h1 id="文章详情">文章详情</h1>

    <?php
    // 获取文章ID
    $articleId = $_GET['id'];

    // 根据ID查询文章
    $query = "SELECT * FROM articles WHERE id = $articleId";
    $result = $conn->query($query);

    if ($result->num_rows > 0) {
        // 显示文章内容
        $row = $result->fetch_assoc();
        echo '<h2>' . $row['title'] . '</h3>';
        echo '<p>' . $row['content'] . '</p>';
        echo '<p>作者：' . $row['author'] . '</p>';
    } else {
        echo '文章不存在';
    }
    ?>
</body>
</html>

The above code obtains the article ID through URL parameters, and queries the database based on the ID to display the detailed content of a single article.

6. Deployment and Testing

Save the above code to the appropriate folder, and configure the Web server to use these files as entry files in the Web root directory.

Finally, by accessing the

index.php file, you will be able to see the homepage of the blog, showing the latest posts and a list of all posts. Clicking on the article title will jump to the article details page, displaying the detailed content of a single article.

Summary

Through the steps in this article, you have learned to use PHP to create a simple blog. Of course, this is just a basic example. You can extend the functions and optimize the interface according to your own needs.

Reference link: https://www.w3schools.com/php/

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