title: Regex for multi-line HTML comments (preg_match_all)
body: <p>I have an html document with multiple commented-out PHP arrays, e.g.:</p>
  
  <pre><code>&lt;!-- Array
  (
  [key] =&gt; 0
  )
  --&gt;
  </code></pre>
  
  <p>Using PHP, I need to somehow parse the HTML for only these comments (there are other comments that will need to be ignored) and extract the contents. I've been trying to use <code>preg_match_all</code> but my regex skills aren't up to much. Could anyone point me in the right direction?</p>
  
  <p>Any help is much appreciated!</p>