Skeleton

Folder	file / folder	Description
config	app.ini	Configure the App by changing the parameters.
config	core.ini	Internal use only!
config	database.ini	Define your database configuration like hostname, database, user and password.
config	folders.ini	Define the folder structure, If you don't like the default.
config	mail.ini	Define the mail settings.
config	php.ini	Define your custom PHP settings like the global php.ini, but set on runtime.
config	router.ini	Define custom routes.
app	controller/	Controllers (Pages).
app	model/	Database models(tables).
app	view/	Views / templates / layouts.
app/view	controller/	Folders with the controller names.
app/view	error/	Error pages.
app/view	layout/	Layout templates.
data	cache/	Cache files about tables and etc.
data	certificates/	SSL/TLS certificates for curl and others.
data	fonts/	Fonts to be used on text on Image generation.
data	logs/	All kinds of logs.
data	session/	PHP Session files.
data	sql/	SQL files for setups and etc
public	.htaccess	Apache configuration file, Responsible for all rewrite, redirect and etc.
public	web.config	IIS configuration file, Responsible for all rewrite, redirect and etc.
public	index.php	This is the only page that goes in public folder, It starts all the processes.
public	css/	CSS files.
public	js/	JavaScript files.
public	img/	Image files.
vendor	*	Core files, Required files to make the framework to work, Additional composer files.