Podmienka => isset a file_exists

Co je zle?
styl je prazdny :?

if (!isset($styl)) {

  $styl = 'clasic';

} else {

   if (!file_exists("data/" . $styl . "/style.php" && "data/" . $styl . "/style.css")) {

     $styl = 'clasic';

   } else {

     include 'data/' . $styl . '/style.php';

   }

}

if (!isset($styl)) {

  $styl = 'clasic';

  include 'data/' . $styl .'/style.php';

} else {

   if (!file_exists("data/" . $styl . "/style.php" && "data/" . $styl . "/style.css")) {

     $styl = 'clasic';

     include 'data/' . $styl .'/style.php';

   } else {

     include 'data/' . $styl . '/style.php';

   }

}

Som fakt lavy :))