php get domain at

domain.php

<?php

function get_absolute_root_url_my($with_scheme = true)
{
  $url = '';

  if ($with_scheme)
  {
    $host = '';
    if (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) {
      $host = $_SERVER['HTTP_X_FORWARDED_HOST'];
    } else if (isset($_SERVER['HTTP_HOST'])) {
      $host = $_SERVER['HTTP_HOST'];
    }

    if (strpos($host, 'localhost') !== false) {
      $url .= 'http://';
    } else {
      $url .= 'https://';
    }

    $url .= $host;

    // Thêm cổng nếu cần
    if ($host && strpos($host, 'localhost') !== false) {
      $is_https = (strpos($url, 'https://') === 0);
      if ((!$is_https && $_SERVER['SERVER_PORT'] != 80) ||
          ($is_https && $_SERVER['SERVER_PORT'] != 443))
      {
        $url_port = ':' . $_SERVER['SERVER_PORT'];
        if (strrchr($url, ':') != $url_port) {
          $url .= $url_port;
        }
      }
    }
  }

  $url .= cookie_path();

  return $url;
}