Level Up Your Web Skills: Become a More Versatile Developer with PHP

PHP (Hypertext Preprocessor) is a widely used A server-side programming language for creating dynamic, interactive web pages. Mastering PHP can greatly improve your web development skills, allowing you to build more powerful and flexible web applications.

Advantages of PHP

• Widely Used:PHP is widely used to build everything from blogs to e-commerce websites.
• Open Source: PHP is open source, which means you can use it for free and modify it as needed.
• Feature-rich:PHP has a range of functions and classes that allow you to handle various web development tasks with ease.
• Community Support:PHP has an active developer community that provides documentation, tutorials, and support.

Practical case: Build a simple message board

Let us learn the basics of PHP through a practical case. We will create a simple message board where users can post messages.

1. Set up the project

First, create a directory named messageboard. Then, create an index.php file in the directory.

2. HTML tags

We add the following HTML tags to the index.php file to create the message board form:

3. Handling submissions

We will create a file named submit.php to handle submitted forms. This file will receive the message content and store the data into the database.

query($sql);
}

// 重定向回留言板
header("Location: index.php");
?>

4. Create database

Finally, let us create a database table named messageboard to store messages:

CREATE TABLE messages (
  id INT NOT NULL AUTO_INCREMENT,
  message TEXT NOT NULL,
  PRIMARY KEY (id)
);

5. Run the application

Navigate to the messageboard directory in the terminal and run the following command to start the application:

php -S localhost:8000

Now you can view the message board by visiting http://localhost:8000 in your browser. Enter your message and click "Submit" to save the message to the database.