Autoloading is a mechanism which requires class, interface and trait definitions.
Files containing the definition of a class must share name with the class name, and have the extention .php.
Additionally instances residing within a namespace must be located within a folder structure matching the namespacing structure (relative from Libraries folder).
Controller files are autoloaded from the src/Controllers directory.
<?php
// File: src/Controllers/AuthController.php
class AuthController {
public function index(): void {
// ...
}
}Other classes are autoloaded from the src/Libraries directory.
<?php
// File: src/Libraries/User.php
class User {
public function authorize(): bool {
// ...
}
}The composer generated autoloader will be registered, when the vendor directory is present in either document root, or its parent.