Compiled index.php for a one-pager, what's wrong?

Question

PHP

Hello. I'm just learning php, wrote a simple index.php for a single page block. What is done wrong?

Header("Content-Type: text/html;charset=UTF-8");

    define("_ROOT", __DIR__ . '/');
    define("_BASEURL", "http://" . $_SERVER["HTTP_HOST"]);
    define("_BLOCKS", __DIR__ . '/blocks/');

  include_once _BLOCKS . 'header.php';
  include_once _BLOCKS . 'nav.php';
  include_once _BLOCKS . 'slider.php';
  include_once _BLOCKS . 'about.php';
  include_once _BLOCKS . 'portfolio.php';
  include_once _BLOCKS . 'contacts.php';
  include_once _BLOCKS . 'footer.php';

Answer 1

define("_ROOT", __DIR__ . '/');
    define("_BASEURL", "http://" . $_SERVER["HTTP_HOST"]);
    define("_BLOCKS", __DIR__ . '/blocks/');

why do all this?

Answer 2

The title was sent ahead of time, if you still have php code running in your includes

Answer 3

Do you even need PHP for a one-pager?

Answer 4

<?phpforgot the opening tag at the beginning

Answer 5

Look towards autoload habrahabr.ru/post/138920