Project_Compass/autoload.php

<?php

declare(strict_types=1);

spl_autoload_register(static function (string $class): void {
    $prefixes = [
        'App\\' => __DIR__ . '/app/',
        'Core\\' => __DIR__ . '/core/',
    ];

    foreach ($prefixes as $prefix => $baseDir) {
        if (!str_starts_with($class, $prefix)) {
            continue;
        }

        $relative = substr($class, strlen($prefix));
        $file = $baseDir . str_replace('\\', DIRECTORY_SEPARATOR, $relative) . '.php';

        if (is_file($file)) {
            require_once $file;
        }

        return;
    }
});

require_once __DIR__ . '/core/helpers.php';