Is there anyway to make simpleXML work on web host

[Kraftyy75]

\[code\] <?php$twitter_url = 'http://twitter.com/statuses/user_timeline/ishrikrishna.xml?count=1';$buffer = file_get_contents($twitter_url);$xml = new SimpleXMLElement($buffer);$status = $xml -> status;$tweet = $status -> text;echo $tweet;?>\[/code\]I used this code to fetch tweets and it works successfully on localhost but not on my webhost, I tried this script on two webhosting services.The problem i've noticed is that functions like file_get_contents(), simplexml_load_file() failed to fetch data from xml file(ex. rss files) stored on another server.is there any solution's u know.Thanks in advance.