Structure

• bin : Something like artisan command, it's just a entrance to execute the command for once.
• migrations : Put all your migrations here.
• public : Things here should be public, like index.php, /css, /js, /img
• src
  • Framework
    • Csrf
    • Dbal
    • MessageContainer
    • Rendering
  • {FEATURE_NAME}
    • Application: The application layer represents the possible interactions between the outside world and your application - the queries and commands that can be executed by the frontend. Application layer is also called service layer or use case layer.
    • Domain: The code for the business logic of your application resides in this layer.
    • Infrastructure: Here place the CRUD repository or query builder.
    • Presentation: Presentation layer encompasses everything from receiving a request from a user to returning an appropriate response.
• storage : The uploaded data, or sqlite file.
• templates : The html template files are here.
• vendor : Of course the composer packages.