PHP Installation

Welcome

Before writing your first PHP program, you need a development environment where you can write, run, and test your code.

Think of it like setting up a workshop before building furniture. A carpenter needs tools before creating a table, and a developer needs the right software before building web applications.

The good news is that setting up PHP is straightforward. By the end of this lesson, you'll have everything you need to start coding.

Why Do We Need a Development Environment?

When you create a website using PHP, your browser cannot execute PHP code directly.

Instead, PHP runs on a web server, processes your code, and sends the final HTML page back to the browser.

To practice on your own computer, you need a local development environment that behaves like a real web server.

This lets you:

• Write PHP code safely.
• Test applications without an internet connection.
• Debug errors quickly.
• Build projects before deploying them online.

What You'll Install

For this course, we'll use a simple and beginner-friendly setup.

These tools are widely used by professional PHP developers and are suitable for both learning and real-world projects.

Choosing Your Development Environment

There are several ways to run PHP locally. Here are the most common options:

Recommendation: If you're just starting, install XAMPP or Laragon. They're easy to set up and include everything you need.

As you gain experience, you'll also learn how to use Docker for professional development environments.

Installation Steps

Follow these steps to prepare your environment.

Step 1: Install VS Code

Download and install Visual Studio Code. It provides features like syntax highlighting, debugging, extensions, and Git integration, making PHP development much easier.

Step 2: Install XAMPP or Laragon

Choose one of the following: XAMPP or Laragon.

Both packages include:

• Apache Web Server
• PHP
• MySQL Database

After installation, start the Apache service. If you're using MySQL later in the course, start that service as well.

Step 3: Verify PHP Installation

Open your terminal or command prompt and run:

php -v

If PHP is installed correctly, you'll see output similar to:

PHP 8.3.x (cli)

This confirms that PHP is ready to use.

Step 4: Create Your First PHP File

Create a new folder named php-course. Inside the folder, create a file named index.php and add the following code:

<?php

echo "Welcome to TechLearningPro!";

?>

Save the file.

Step 5: Run Your First PHP Program

If you're using the PHP built-in server, open a terminal in your project folder and run:

php -S localhost:8000

Now open your browser and visit:

http://localhost:8000

You should see:

Welcome to TechLearningPro!

Congratulations! You've successfully run your first PHP application.

Folder Structure

As your projects grow, keeping files organized becomes important.

A simple project structure looks like this:

php-course/
│
├── index.php
├── assets/
│   ├── css/
│   └── images/
├── includes/
├── pages/
└── uploads/

We'll gradually expand this structure throughout the course.

Common Installation Problems

• Problem: PHP command not found — Solution: Add the PHP installation directory to your system's PATH environment variable.
• Problem: Apache won't start — Solution: Another application (such as Skype or IIS) may already be using port 80. Change the Apache port or stop the conflicting application.
• Problem: Blank page in the browser — Solution: Check your PHP code for syntax errors and enable error reporting while learning.
• Problem: Browser downloads the PHP file — Solution: You're opening the file directly instead of running it through a web server. Use XAMPP, Laragon, or the built-in PHP server.

Best Practices

• Install the latest stable version of PHP.
• Keep Composer updated.
• Organize your project files into meaningful folders.
• Use VS Code extensions for PHP development.
• Verify your installation before starting any project.

Hands-on Exercise

Task 1: Install PHP, VS Code, and XAMPP or Laragon.

Task 2: Verify the installation using php -v.

Task 3: Create an index.php file that displays:

<?php

echo "Hello, PHP World!";

?>

Run the application in your browser.

Challenge: Modify the program to display your name, your favorite programming language, and the current year.

Summary

• A PHP development environment allows you to build and test applications locally.
• VS Code, PHP, Composer, and XAMPP/Laragon provide everything needed to begin development.
• The php -v command confirms that PHP is installed correctly.
• The built-in PHP server is useful for practice and small projects.
• A well-organized project structure makes future development easier.

Key Takeaways

• Install the essential development tools before writing PHP applications.
• Verify your installation before starting a project.
• Use a local server to execute PHP code correctly.
• Keep your project structure clean and organized.
• Practice by running small programs before building larger applications.

Interview Questions

Beginner

Intermediate

Advanced

What's Next?

Now that your development environment is ready, it's time to write real PHP code.

In the next lesson, PHP Architecture, you'll learn how PHP fits into the bigger picture — the web server, the request cycle, and how your code connects to databases and browsers.