title: Parsing HTML Span element having id
body: <p>I am showing a snippet of HTML code I was working on.I want to extract the value of the element under the span having an ID coveredAreaUnit but no classname.
  I was able to access span elements having classnames through HTML DOM parsing
  $html->find('span.classname').
  I tried for span elements having some id as 
  $html->find('span#idname')
  but this doesn't work.</p>
  
  <p>I also tried $html->find(#idname) but that doesn't help either
  I can access this span element in another way(i.e. by using DOM tree elements and nodes) but that is way too ugly.</p>
  
  <p>Snippet</p>
  
  <pre><code>    ......
  &lt;span id="coveredAreaUnit" style="display:none;"&gt;Sq-ft&lt;/span&gt;
  &lt;span id="coveredArea" style="display:none;"&gt;1350&lt;/span&gt;
      ........
  </code></pre>