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Learn PHP

A free, interactive online PHP course. You write PHP on every lesson, with AI hints when something warns and a free certificate when you finish.

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View syllabusPHP playground

31,555+ codders enrolled

230 lessons206 challenges1,394 quiz questions

  • Beginner friendly
  • sparkles iconAI-assisted coding help
  • hint iconHands-on interactive lessons
  • volume On iconAudio narration on every lesson
  • quiz iconQuizzes to test your knowledge
  • certificate iconFree certificate of completion

Syllabus

3 sections3 projects230 lessons206 challenges1,394 quiz questions
  1. Section 1

    Fundamentals

    Start sectionStartExpandCollapse    Build a strong foundation with essential concepts and basic skills71 lessons59 challenges405 questions1 project

    Introduction to PHP

    5 lessons431

    Variables and Data Types

    9 lessons663

    Basic Operators

    8 lessons852

    Comparison & Logical Operators

    5 lessons532

    Conditional Logic

    6 lessons639

    Arrays Part 1 - Indexed

    7 lessons645

    Arrays Part 2 - Associative

    6 lessons540

    Loops

    7 lessons746

    Project: Simple To-Do List

    Project7 lessons1

    Functions

    8 lessons857

    Final Challenges

    3 lessons3
  2. Section 2

    Logic & Flow

    Start sectionStartExpandCollapse    Develop problem-solving skills and create dynamic, interactive programs68 lessons61 challenges351 questions1 project

    Advanced Functions

    9 lessons965

    Advanced Array Manipulations

    10 lessons1066

    Sorting Arrays

    7 lessons747

    Multi-dimensional Arrays

    6 lessons639

    Student Gradebook

    6 lessons6

    Higher-Order Array Functions

    7 lessons745

    Working with Dates and Times

    6 lessons539

    Error and Exception Handling

    7 lessons650

    Event Scheduler

    Project6 lessons1

    Final Challenges

    4 lessons4
  3. Section 3

    Object Oriented Programming

    Start sectionStartExpandCollapse    Discover how to organize code with classes, objects, and reusable structures91 lessons86 challenges638 questions1 project

    Fundamentals of OOP

    9 lessons969

    Namespaces & Autoloading

    5 lessons534

    Class Properties

    6 lessons644

    Inheritance

    6 lessons644

    Interfaces & Contracts

    6 lessons644

    Polymorphism

    5 lessons536

    Encapsulation

    6 lessons645

    Magic Methods

    7 lessons753

    Traits

    5 lessons544

    Advanced OOP Concepts

    7 lessons761

    Type System & Error Handling

    7 lessons754

    Design Patterns Part 1

    5 lessons546

    Design Patterns Part 2

    7 lessons764

    Project: Library Management

    Project6 lessons1

    Final Challenges

    4 lessons4

PHP courses

Hands-on PHP courses, free to start in your browser.

Interview PreparationData StructuresGraph Algorithms Courses

Beginner Challenges - Practice Basic Concepts

Popular

Put your beginner coding knowledge to test and try to solve this programming challenges, use any language you want, Happy Coding!

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Certificate on completion

  • 20
  • 20

Coding Problems

Popular

Put your programming problem solving skills to the test using the exercises with different difficulties in this course. Designed for coders with some prior knowledge of the basic syntax in any programming language.

certificate icon

Certificate on completion

  • 32
  • 31

Stack - Data Structures Series #1

In this course, you will learn about the Stack data structure, create a Stack from zero using your preferred language, and practice coding challenges with it!

Data Structures
  • 13
  • 6
  • 1

Coding Problems: Volume 2

Put your programming problem solving skills to the test using the exercises with different difficulties in this course. Designed for coders with some prior knowledge of the basic syntax in any programming language. This course is an extension of the first Coding Problems

certificate icon

Certificate on completion

  • 25
  • 24

Hash Tables - Data Structures Series #4

In this course, you will learn about the Hash Table data structure, create a Hash Table from zero using your preferred language, and practice coding challenges with it!

Data Structures
certificate icon

Certificate on completion

  • 14
  • 12

Linked List - Data Structures Series #5

In this course, you will learn about the Linked List data structure, create a Linked List from zero using your preferred language, and practice coding challenges with it!

Data Structures
certificate icon

Certificate on completion

  • 14
  • 6
  • 1
See all 43 PHP courses →
What you get
Everything you'll use to learn to code

Learn by Doing

Write real code, query databases, build websites, and master AI prompts. Our interactive lessons cover every skill modern developers need.

playground.js
Code Editor
1const greeting = "Hello, Coddy!"
2function sayHi(name) {
3    return greeting + " " + name
4}
5
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Input
"Alex"
Output
"Hello, Coddy! Alex"

Build Your Coding Streak

Stay consistent and watch your progress grow! Track your daily coding habit, protect your streak with freeze days, and earn rewards for showing up every day.

12 days streak

Return tomorrow to keep your streak!

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January 2026

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Double or Nothing

Day 5 of 7

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Streak Freeze

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Code Anywhere, Anytime

Take your coding journey on the go! No setup, no downloads - just open and start coding. Available on iOS, Android and Web with 4.9 star ratings.

Python
7Streak
250Score
5Energy
Variables
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CONTINUE
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Journey
Goals
Leaderboard
Profile
4.9
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Rating

You're Not Alone in This

Compete on global leaderboards, invite friends to earn rewards, and celebrate each other's wins. Coding is better with friends!

Challenger League
Challenger LeagueTop 7 advance
leaderboard First icon1
avatar 1 icon
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Alex7+ Days
2840
leaderboard Second icon2
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Jordan7+ Days
2650
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Sam7+ Days
2420
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Casey
2180
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Morgan7+ Days
1950
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Every way to learn

Read, listen, test yourself, ask the AI, or look up anything you've already covered. Every lesson meets you where you are.

Intro to Variables
Audio

A variable is a named container that stores a value you can reference later in your program.

In Python, you create one by writing the name, an equals sign, then the value you want to store.

The value can change over time - reassigning the name simply points it to a new value.

1xSarah

Prove Your Skills

Earn certificates for every course you complete. Add them to your LinkedIn profile and resume to showcase your coding expertise to employers.

CoddyCertificate of Completion
This certifies thatJohn Doehas successfully completed
PythonPython Fundamentals
Verified
DateJan 2026
LinkedInAdd to LinkedIn

Why learn PHP with Coddy

  • Run real PHP code in your browser. No XAMPP, no Apache, no local server to configure. Each lesson runs your PHP server-side and shows the output instantly.
  • PHP for the web the way it's actually used today: variables, control flow, functions, arrays, includes, forms, superglobals, sessions, and basic database patterns. The PHP foundations every web developer needs.
  • AI hints help you debug PHP errors and untangle warnings without giving the answer away, so common issues like undefined indexes and quoting bugs become learning moments instead of dead ends.
  • Free PHP certificate when you finish the course. A credible proof point for web-development, WordPress, and Laravel roles where PHP is still a baseline expectation.

Frequently asked questions about learning PHP

Is PHP hard to learn?

PHP is one of the easier languages to start with. The syntax is forgiving, you can mix it directly into HTML, and you see results in the browser immediately. Most beginners build a working PHP page within the first hour. The trickier parts (security, sessions, working with databases) come later and are introduced gradually.

Is PHP still worth learning in 2026?

Yes. PHP still powers a large share of the web - WordPress alone runs roughly 40% of all sites, and frameworks like Laravel and Symfony are healthy and active. For WordPress development, agency-style web work, or any backend that talks to MySQL, PHP is a very practical skill.

How long does it take to learn PHP?

PHP basics - variables, conditionals, loops, functions, arrays - take one to two weeks of daily practice. Building a small dynamic site with forms, sessions, and database queries usually takes one to three months on top of that. Going deeper into Laravel or WordPress development is a separate ramp.

What's the difference between PHP and HTML?

HTML is the markup language that describes the structure of a web page. PHP is a programming language that runs on the server and generates HTML before it reaches the browser - that's how you produce dynamic pages, log users in, save form data, and so on. They work together: HTML for layout, PHP for logic.

Can I learn PHP online for free?

Yes. The interactive PHP course is free - lessons, coding exercises, quizzes, and a certificate. PHP runs server-side in a sandboxed environment, so you don't need to install Apache, MySQL, or XAMPP locally to start coding.

Do I get a PHP certificate after the course?

Yes. Finishing the PHP course gives you a free certificate of completion you can add to your resume or share on LinkedIn - useful alongside WordPress sites, Laravel apps, or any portfolio web projects you've built.
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Learn PHP with Coddy

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