How can we read xml file in php

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function get_url_contents($url){
        $crl = curl_init();
        $timeout = 5;
        curl_setopt ($crl, CURLOPT_URL,$url);
        curl_setopt ($crl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt ($crl, CURLOPT_CONNECTTIMEOUT, $timeout);
        $ret = curl_exec($crl);
        curl_close($crl);
        return $ret;
}

$rssdetail=get_url_contents('http://feeds.feedburner.com/KevinMd-MedicalWeblog');
$rss=simplexml_load_string($rssdetail);
foreach($rss-&gt;children() as $item)
{

 for($i=0;$i&lt;=5;$i++)
{
   $sub_title = $item-&gt;item[$i]-&gt;title;
  $description = $item-&gt;item[$i]-&gt;description;
  $link = $item-&gt;item[$i]-&gt;link;
  $pubDate = $item-&gt;item[$i]-&gt;pubDate;
}
}
</div>