There is an example how to search videos by search term in the documentation, but how to extract information from single video when you have the videoID.
<?php
// set feed URL
$feedURL = 'http://gdata.youtube.com/feeds/api/videos/LjhCEhWiKXk?v=2';
// read feed into SimpleXML object
$sxml = simplexml_load_file($feedURL);
// this get the video title
$videoTitle = $sxml->title;
?>
I get only the video title ... also there is no views count,description and duration.