PHP is one of the most popular backend languages for web development, powering everything from small personal sites to large platforms like WordPress and Facebook's early architecture. If you're starting out, here's a practical path that actually works.

First, get a local environment running. XAMPP or Laragon bundles PHP, MySQL, and Apache together so you're not configuring each piece by hand. Once installed, drop a index.php file in the htdocs folder and confirm <?php echo 'Hello, World!'; ?> renders in the browser. That's your whole toolchain proven in five minutes.

Next, get comfortable with core syntax before reaching for a framework: variables, arrays, functions, and control structures. A common beginner mistake is jumping straight to Laravel without understanding what it's abstracting away — you'll debug faster later if you know what's happening underneath.

Forms and superglobals come next. Learn $_GET, $_POST, and $_SERVER, and practice validating and sanitizing user input immediately — never trust data coming from a form, even your own. This habit alone prevents a large share of common web vulnerabilities.

Finally, connect PHP to MySQL using PDO rather than the old mysqli functions. PDO gives you prepared statements out of the box, which protects against SQL injection and is worth learning correctly from day one rather than retrofitting later.

Common beginner mistakes to avoid: mixing HTML and business logic in one giant file, trusting form input without validation, and skipping error handling until something breaks in production. Build small — a guestbook, a to-do list, a simple CRUD app — before attempting anything bigger.