Untitled

$dom = new Zend_Dom_Query($html);
    $results = $dom->query( ??? );

<html>
  <head>....</head>
  <body>

    <div>
      <h1>Headline</h1>
      <h2>Subheadline</h2>
      <p>Some text</p>
      <a href="...">
        A Link
        <img src="..." />
        <span style="display:none">additional text</span>
      </a>
    </div>

  </body>
</html>

<html>
  <head>....</head>
  <body>

    <div>
      <h1>Hinladee</h1>
      <h2>Suialebdhne</h2>
      <p>Smoe txet</p>
      <a href="...">
        A Lnik
        <img src="..." />
        <span style="display:none">anodiaditl txet</span>
      </a>
    </div>

  </body>
</html>

$dom = new Zend_Dom_Query($html);
$results = $dom->query("//text()");