title: format xml string
body: <p>What is the best way to format XML within a PHP class.</p>
  
  <pre><code>$xml = "&lt;element attribute=\"something\"&gt;...&lt;/element&gt;";
  
  $xml = '&lt;element attribute="something"&gt;...&lt;/element&gt;';
  
  $xml = '&lt;element attribute=\'something\'&gt;...&lt;/element&gt;';
  
  $xml = &lt;&lt;&lt;EOF
  &lt;element attribute="something"&gt;
  &lt;/element&gt;
  EOF;
  </code></pre>
  
  <p>I'm pretty sure it is the last one!</p>