Light-PHP

Light PHP it's an open-source minimal PHP framework that only includes what's necessary, avoiding big and complex structures, yet capable of building big and fully-featured API/Websites.

Modular structure

All the application code in Light-PHP it's divided by modules, this makes the code separated and decoupled also easier to maintain and modify. All the modules are located under the src/ path.
These modules it's what Light-PHP uses to run your application, so, you won't write any application code outside the src/ (unless you want to change the framework's behavior).
(more info here)

MVC structure

All the modules have a MVC structure, so, inside each module, it's divided by a model/, view/, controller/ folders (dividing the module's responsibility).
In some cases you create a module which don't return any template (i.e: returning a JSON), for this, you can create a module without the view folder (it's not mandatory). Same for Model folder, if your module doesn't needed you don't have to create it. (excepting controller folder, must be there always).

Services

Light-PHP cames with a service container out of the box, this container holds useful services that are instantiated and ready to use in your module's controllers and models, being able to use $this->service_name (i.e: $this->database, $this->session...)
(more info here)

Main folders

 /
 ├─ public
 ├─ src
 └─ system
    ├─ config
    ├─ logs
    └─ ...

src: Main folder, all the PHP application code it's located here (where you will spend 90% of the time) public: Index.php and public files accesible from outside (JS, CSS, PDFs in case they exist)
system: Stores the engine, services, composer and the framework configuration
system/config: Config of database/email credentials, and framework settings
system/logs: Logs (warning, exceptions) created