function cdn_url(string $path=''): string {
    $base = rtrim((string)(cfg()['cdn_url'] ?? 'https://cdn-loteria.nyc3.cdn.digitaloceanspaces.com/controles/'), '/').'/';
    if ($path === '') return $base;
    if (preg_match('~^https?://~i', $path)) return $path;
    return $base.ltrim($path, '/');
}
function brand_logo_url(array $brand): string {
    if (!empty($brand['logo_url'])) return cdn_url((string)$brand['logo_url']);
    $slug = $brand['slug'] ?? slugify((string)($brand['nombre'] ?? ''));
    return cdn_url($slug.'.png');
}
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><url><loc>https://codigocontroluniversal.com/</loc></url><url><loc>https://codigocontroluniversal.com/marcas</loc></url><url><loc>https://codigocontroluniversal.com/samsung</loc></url><url><loc>https://codigocontroluniversal.com/samsung/tv-control-universal</loc></url></urlset>