variable in definition
<p>I'm loading an XML file into the page and want to get information from the URL parameter and put it in the url for the XML file that simplexml is laoding. is this possible? 
Here is the current code:</p>

<pre><code>$gid = $_GET['gid']; 
$gach = simplexml_load_file('http://xml.com/GIDHERE/page.html?xml=1');
</code></pre>

<p>How can I put $gid where it says GIDHERE ?</p>
