A Rust-Powered,
PHP-Family Language
for Fast Web Backends

// Traditional PHP: Blocking sequential I/O by default; curl_multi requires verbose boilerplate
function getUserDashboard(int $userId): array {
    // Sequential blocking: First query takes 30ms...
    $profile = DB::table('users')->find($userId);

    // ...Then HTTP call takes 70ms. Total = 100ms latency
    $ch = curl_init("https://api.orders.internal/{$userId}");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
    $orders = json_decode($response, true);
    curl_close($ch);

    // Array filter in PHP requires array_values to re-index keys
    $highValue = array_values(array_filter($orders, function($o) {
        return $o['total'] > 100;
    }));

    // Post-response hooks in PHP-FPM require fastcgi_finish_request() (fragile) or queue workers
    if (function_exists('fastcgi_finish_request')) {
        fastcgi_finish_request();
        Log::info("Dashboard rendered for {$userId}");
    }

    return ['user' => $profile, 'recent_orders' => $highValue];
}

// Node.js: Async/await with Promise.all
async function getUserDashboard(userId) {
    // Concurrent fetch using Promise.all
    const [profile, orders] = await Promise.all([
        db.users.findOne({ id: userId }),
        fetch("https://api.orders.internal/" + userId).then(res => res.json())
    ]);

    // JavaScript array filter
    const highValue = orders.filter(o => o.total > 100);

    // Post-response cleanup hook requires setImmediate or res.on('finish')
    setImmediate(() => {
        logger.info("Dashboard rendered for " + userId);
    });

    return { user: profile, recentOrders: highValue };
}

// Go: Goroutines with channels & waitgroups
func getUserDashboard(userId int) (*Dashboard, error) {
    var wg sync.WaitGroup
    var profile *User
    var orders []Order
    var errUser, errOrders error

    wg.Add(2)
    go func() {
        defer wg.Done()
        profile, errUser = db.FindUser(userId)
    }()
    go func() {
        defer wg.Done()
        orders, errOrders = httpGetOrders(userId)
    }()
    wg.Wait()

    if errUser != nil || errOrders != nil {
        return nil, fmt.Errorf("fetch failed")
    }

    var highValue []Order
    for _, o := range orders {
        if o.Total > 100 {
            highValue = append(highValue, o)
        }
    }

    go logger.Info(fmt.Sprintf("Dashboard rendered for %d", userId))
    return &Dashboard{User: profile, RecentOrders: highValue}, nil
}