👀 Views: 2 💬 Answers: 1 📅 Created: 2025-07-08

php composer autoloading psr-4 PHP

I've spent hours debugging this and I've looked through the documentation and I'm still confused about Hey everyone, I'm running into an issue that's driving me crazy. I'm working with an scenario with autoloading in my PHP 8.1 application that uses Composer for dependency management. My project is structured with PSR-4 namespaces, but it seems that some of my classes are not being autoloaded properly. I've followed the PSR-4 autoloading standard, and here’s how my directory structure looks: ``` /src ├── Controller │ └── UserController.php ├── Model │ └── User.php └── Service └── UserService.php ``` My `composer.json` file includes the following autoload section: ```json "autoload": { "psr-4": { "App\\": "src/" } } ``` When I try to instantiate the `UserController` class using: ```php use App\Controller\UserController; $controller = new UserController(); ``` I get this behavior message: ``` Fatal behavior: Uncaught behavior: Class 'App\Controller\UserController' not found ``` I've run `composer dump-autoload` to regenerate the autoload files, but the scenario continues. I’ve also double-checked the namespace declaration in my `UserController.php` file: ```php namespace App\Controller; class UserController { // Controller logic here } ``` I can’t figure out why the autoloader can’t find my `UserController` class, while other classes in the same namespace seem to be loading without issues. Have I missed something in my configuration, or is there a specific behavior in PHP 8.1 that could explain this question? Any guidance would be appreciated! For context: I'm using Php on Linux. Has anyone else encountered this? The project is a service built with Php. Is there a simpler solution I'm overlooking?