external XML file not loading in php . HTTP forbidden 403
<p>I have this xml resource and I want this to parsed in php.</p>

<pre><code>http://example.gov
</code></pre>

<p>My php code :</p>

<pre><code>&lt;?php
$userinput='http://example.gov/MapClick.php?lat=41.98&amp;lon=-87.9&amp;FcstType=digitalDWML';

$xml = simplexml_load_file($userinput);
echo $xml;
?&gt;
</code></pre>

<p>Error I am receiving :</p>

<blockquote>
  <p>Warning: simplexml_load_file(<a href="http://forecast.weather.gov/MapClick.php?lat=41.98&amp;lon=-87.9&amp;FcstType=digitalDWML" rel="nofollow">http://forecast.weather.gov/MapClick.php?lat=41.98&amp;lon=-87.9&amp;FcstType=digitalDWML</a>): failed to open stream: HTTP request failed! HTTP/1.0 403 Forbidden in C:\xampp\htdocs\xmlParser.php on line 4</p>
  
  <p>Warning: simplexml_load_file(): I/O warning : failed to load external entity "<a href="http://forecast.weather.gov/MapClick.php?lat=41.98&amp;lon=-87.9&amp;FcstType=digitalDWML" rel="nofollow">http://forecast.weather.gov/MapClick.php?lat=41.98&amp;lon=-87.9&amp;FcstType=digitalDWML</a>" in C:\xampp\htdocs\xmlParser.php on line 4</p>
</blockquote>

<p>And just to add, xml resource is on different server</p>