Yes, that's what I do. I also think it's fine to use omit trailing semicolons and to use short-open tags (I already labelled the file .php --- why do I have to keep saying "php" all over it? And I'm not usually outputting XML.)

  <? foreach($x as $y): ?>
      <h1><?= h($y->title) ?></h1>
  <? endforeach ?>

You just want to make sure to escape all output with htmlspecialchars, or define a shorter function like I did ("h").