Untitled

facebook user id
<?php
require_once 'facebook.php';
$facebook = new Facebook(array(
    'appId' =>'1234',
    'secret' => '12345',
    'cookie' => true,
    'domain' => 'http://www.facebook.com/Guides4All.Co.IL/'
));

$session = $facebook->getSession();
if (!$session) {
    //user not logged into facebook
    $uName = "Guess";
} else {
    try {
        $user_id = $facebook->getUser();
        $tt = "/" . $user_id;
        $me = $facebook->api($tt);
        $uName = $me["name"];
    }
    catch (FacebookApiException $e) {
    }
}
echo "Welcome $uName";
?>

Fatal error: Call to undefined method Facebook::getSession() in /*****.php on line 11

<div id="fb-root"></div>
<script src="https://connect.facebook.net/en_US/all.js#appId=YOUR_APP_ID&xfbml=1"></script>
<script>
  window.fbAsyncInit = function() {
    FB.init({
        appId: 'YOUR_APP_ID',
        cookie: true,
        xfbml: true,
        oauth: true
  });
  (function() {
        var e = document.createElement('script'); e.async = true;
        e.src = document.location.protocol +
            '//connect.facebook.net/en_US/all.js';
        document.getElementById('fb-root').appendChild(e);
  }());
</script>
<fb:serverFbml><script type="text/fbml"><fb:userlink uid="loggedinuser"/></script></fb:serverFbml>

$facebook = new Facebook(…);
$user = $facebook->getUser();
if ($user) {
  try {
    // Proceed knowing you have a logged in user who's authenticated.
    $user_profile = $facebook->api('/me');
  } catch (FacebookApiException $e) {
    error_log($e);
    $user = null;
  }
}