What is PHP?
Learn about PHP and why it’s used in web development.
What is PHP? is a free PHP Academy lesson on CoddyKit — lesson 1 of 3. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the PHP Academy learning path, one of 3 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Welcome to PHP
Hi there! 👋 You're about to meet PHP, one of the languages that quietly powers a huge chunk of the web.
The easiest way in
This is the most beginner-friendly, micro-sized track we have. Tiny steps, big wins. You'll move fast and finish quickly.
Meet Your AI Mentor 🤖
See the purple ✨ AI Mentor button at the bottom of every lesson? That is your personal tutor — free to try, available 24/7 on mobile and web.
Tap it whenever you are stuck and choose what you need:
- 💡 Explain Simply — turn anything confusing into plain words
- 📋 Step by Step — break a problem into clear steps
- 🗣️ Everyday Example — connect it to real life
There is also Mini Quiz, Code Example and Ask — ask it absolutely anything. You are never learning alone. 💜
Learn in Your Own Language 🌍
Prefer to learn in your native language? You can!
Tap the 🌐 translate button at the top-right of the lesson (it is in the top bar on the web too) and pick your language. Every lesson instantly appears in your own language.
Switch back any time — learn the way that feels easiest for you. 🙌
So what is PHP?
PHP is a programming language for building websites. Think of it as the chef in the kitchen, cooking up pages before they reach you.
It runs on the server
PHP works behind the scenes on a server, not in your browser. It does the work, then sends you the finished page.
What the P stands for
PHP means "PHP: Hypertext Preprocessor." Don't worry about the name. It just prepares web pages for you. 😊
You already use it
Sites like Wikipedia and millions of WordPress blogs run on PHP. You've used it without even knowing!
Why people love it
PHP is free, friendly, and forgiving. It was made to get beginners building real things fast.
You're already moving 🚀
That's it for the big picture, and you nailed it! Next up: where PHP actually runs the web.
Quick Check
Let's lock it in. Where does PHP do its work?
Frequently asked questions
Is the “What is PHP?” lesson free?
Yes — the full text of “What is PHP?” is free to read here on the web, and the PHP Academy course includes 3 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the PHP Academy course, upgrade to CoddyKit PRO.
What will I learn in “What is PHP?”?
Learn about PHP and why it’s used in web development. You practise PHP Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start PHP Academy?
No prior experience is required. PHP Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 1 of 3, so you can start here or from the beginning and move at your own pace.
How long does the “What is PHP?” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this PHP Academy lesson?
Yes. Every PHP Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.