Advanced PHP

5 new sections, each with a real interactive demo to practice

🚀 One step beyond the basics

These examples assume you already know variables, conditionals and functions in PHP. Each section includes a live form: change the data, submit and see how the real PHP code behind it responds, along with a line-by-line explanation.

📚 Available Sections

🧱

1. POO in PHP

Classes, objects, constructors, encapsulation and inheritance with an interactive product.

classes inheritance

🔒

2. Security and Sessions

$_SESSION, password_hash/password_verify and CSRF protection with tokens.

sessions CSRF

🗄️

3. Database with PDO

Interactive CRUD with prepared statements, no need for your own database.

PDO SQL

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4. Error Handling

try/catch/finally, custom exceptions and DivisionByZeroError.

exceptions try/catch

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5. Modern PHP

match(), arrow functions and strict typing with declare(strict_types=1).

match PHP 8

💡 How to get the most out of it

🧪 Change the values

Each demo has a form: try edge cases (negative numbers, zero, text) to see how the code reacts.

📖 Read the explanation

Below each demo there's a line-by-line breakdown of why the code is written that way.

💪 Do the exercise

Each page ends with a challenge to extend the code, with hidden solutions in case you get stuck.