PSR-4不自动加载类文件吗？

Question

Index: <?php require '../application/bootstrap.php'; ?> <?php require '../application/bootstrap.php'; ?>

Bootstrap:

<?php

define("START", microtime(true));
define("ROOT", realpath(__DIR__.'/../'));

include '../vendor/autoload.php';

include ROOT . '/application/Library/Application.php';

App\Application::getClass('test')->test();

Composer.JSON:

"autoload": {
    "psr-4": {
        "App\\": "application/"
    }
}

The problem is with this line:

include ROOT . '/application/Library/Application.php';

I shouldn't have to include it, PSR-4 should do it for me. Here is my Application class.

<?php

namespace App;

class Application
{
    public static function getClass($library){} // removed body for minimal example
}

?>

Here is my file structure: https://i.imgur.com/Gr1aaZG.png , Vendor folder is hidden in my IDE as I configured it like that in my VSCode settings, although it is there.

Answer 1

Your PSR-4 namespace says ROOT of App namespace is at folder application/ , but your file is at path /application/Library/Application.php . With this config you either move Application.php to /application/Application.php or you set namespace of your application class to App\\Library ;

That should solve your problem.