function prefix_get_post_id() {

  if ( is_ssl() ) {
    $protocol = 'https://';
  } else {
    $protocol = 'http://';
  }

  if ( is_front_page() ) {
    $post_id = get_option('page_on_front');
  } else if ( is_home() ) {
    $post_id = get_option( 'page_for_posts' );
  } else {
    $post_id = url_to_postid( $protocol . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"] ) );
  }

  return $post_id;

}