Next Steps

What you can do now

• Run PHP from the CLI and built-in server
• Use variables, strings, arrays, and functions
• Handle forms, includes, sessions, and simple PDO
• Install a package with Composer and catch exceptions

Practice ideas

Build a guestbook: a form posts a message, PDO stores it in SQLite, and a page lists entries with escaped output.

Common traps

• Printing raw user input into HTML
• Building SQL with string concatenation
• Forgetting session_start
• Mixing many concerns in one giant PHP file

Where to go next

• A framework such as Laravel or Symfony
• Password hashing with password_hash
• REST APIs and JSON responses
• PHPUnit for tests
• Front controller and routing patterns