Copied straight from facebook developers example
[note: it is impossible to export 100% useful data via the facebook api, other techniques frowned upon by facebook are required to collect useful data]
<?
require_once 'facebook.php';
$appapikey = 'you_api_key;
$appsecret = 'your_app_secret';
$facebook = new Facebook($appapikey, $appsecret);
$user_id = $facebook->require_login();
// Greet the currently logged-in user!
echo "<p>Hello, ";
// Print out at most 25 of the logged-in user's friends,
// using the friends.get API method
echo "<p>Your Friends:";
$friends = $facebook->api_client->friends_get();
//$friends = array_slice($friends, 0, 25);
$user_details=$facebook->api_client->users_getInfo($friends, array('last_name','first_name'));
foreach ($user_details as $friend) {
echo "<br>".$friend['uid'].", ".$friend['first_name'].", ".$friend['last_name'] . "n";
}
echo "</p>";
?>