xamxam/app/router.php

<?php
/**
 * Router script for PHP built-in development server (php -S).
 *
 * All non-asset requests go through the front controller (public/index.php).
 * Admin panel and static files are served directly.
 */

$uri = parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);

// Static assets: let the dev server handle them directly
$ext = pathinfo($uri, PATHINFO_EXTENSION);
if (
    in_array(
        $ext,
        [
            "css",
            "js",
            "png",
            "jpg",
            "jpeg",
            "gif",
            "ico",
            "svg",
            "woff",
            "woff2",
            "ttf",
            "eot",
            "otf",
            "map",
        ],
        true,
    )
) {
    return false; // serve directly
}

// Admin panel: serve files directly
if (str_starts_with($uri, "/admin")) {
    // Rewrite /admin → /admin/index.php
    $file = __DIR__ . "/public" . $uri;
    if (is_dir($file)) {
        $file .= "/index.php";
    }
    if (file_exists($file)) {
        include $file;
        return true;
    }
}

// Send everything else through the front controller
$_SERVER["SCRIPT_NAME"] = "/index.php";
require __DIR__ . "/public/index.php";
return true;