/gist:5237879

## gistfile1.php
<?php
/*********************************/

$fbAppId = "150734978329989"; // replace this with your Facebook Apps' App ID
$fbAppSecret = "b62cb0fa9d74e2c8ce74198343938241";

/*********************************/

//Login for serving the Ajax routine
if ( $_GET['ajax']=="yes" ) {

	$token = $_POST['token']; //get the access token from the User after he/she authorises the app
	$userData = json_decode(file_get_contents("https://graph.facebook.com/me?access_token=".$token), true); //get User's data using the Graph API
	echo $fbuid = "Facebook User ID: ".$userData['id']."<br />"; //User's Facebook ID
	echo $fbfname = "First Name: ".$userData['first_name']."<br />"; //User's First Name on Facebook
	echo $fblname = "Last Name: ".$userData['last_name']; //User's Last Name on Facebook

} else {
require "facebook.php";
$facebook = new Facebook(array(
'appId' => $fbAppId,
'secret' => $fbAppSecret,
'cookie' => true
));
$signed_request = $facebook->getSignedRequest();
$like_status = $signed_request["page"]["liked"];
//Normal HTML Page
?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml">
    <head>
	<script src="http://code.jquery.com/jquery-1.6.1.min.js" type="text/javascript"></script>
	<script type="text/javascript">
	    function login(varr) {
               if ( varr == 1 ) { alert('Please Like This Page First, by Clicking the Like button Above!'); } else {
             //this function should be attached to your code's events which will initiate the Facebook login dialog.
	         //After user authorises this app, we will get the Access Token, which is returned by Facebook in order
             //to find the current user' Facebook UID


			FB.getLoginStatus(function(response) {
			  if (response.status === 'connected') {

			    // the user is logged in and has authenticated your
			    // app, and response.authResponse supplies
			    // the user's ID, a valid access token, a signed
			    // request, and the time the access token
			    // and signed request each expire
			    var uid = response.authResponse.userID;
			    var accessToken = response.authResponse.accessToken;
			    getFBuid(accessToken);

			  } else if (response.status === 'not_authorized') {

					FB.login(function(response) {
					  	if (response.status === 'connected') {
						    var uid = response.authResponse.userID; //we have got the User's facebook ID here
						    var accessToken = response.authResponse.accessToken; //Access Token from facebook
						    getFBuid(accessToken);
					  	} else {
					    	alert("There was an error :(");
					  	}
					},{scope:'email'});

			  } else {

					FB.login(function(response) {
					  	if (response.status === 'connected') {
						    var uid = response.authResponse.userID; //we have got the User's facebook ID here
						    var accessToken = response.authResponse.accessToken; //Access Token from facebook
						    getFBuid(accessToken);
					  	} else {
					    	alert("There was an error :(");
					  	}
					},{scope:'email'});

			  }
			 });


	       }
	    }
	    function getFBuid(token) {

		//This function gets User's data from the Graph API with the help of the access token Received
                $("#loaderr").show();
		$.post("index.php?ajax=yes", {token: token},
		      function(data) {
                            $("#loaderr").hide();
			    alert (data);
			    $("#fbuid").html(data);
		     });
	    }
	</script>
    </head>
    <body>
	<div id="fb-root"></div>
	<script type="text/javascript" src="http://connect.facebook.net/en_US/all.js"></script>
	<script type="text/javascript">
	    FB.init({
		appId  : '<?php echo $fbAppId; ?>',
		status : true, // check login status
		cookie : true, // enable cookies to allow the server to access the session
		xfbml  : true  // parse XFBML
	    });
	</script>
	<span id="fbuid">
		<?php if ($like_status) { ?>

		    Facebook User ID: <a href="javascript: login(2)">Click to Get Uid</a> <!-- Note that we have attached the login() function
											     to the Link as shown here, and explained above-->

                <?php } else { ?>

		    Facebook User ID: <a href="javascript: login(1)">Click to Get Uid</a> <!-- Note that we have attached the login() function
											     to the Link as shown here, and explained above-->

		<?php } ?>

	</span>
        <br /><br />
	<span id="loaderr" style="display: none;">Please Wait...</span>
	<br /><br />
        Full Tutorial on "How To Get Logged In / Current Facebook User’s ID On Iframe Page Tabs?" here: <a target="_blank" href="http://digitizor.com/?p=10437">digitizor.com/?p=10437</a>
    </body>
</html>
<?php } ?>
	<?php
	/*********************************/

	$fbAppId = "150734978329989"; // replace this with your Facebook Apps' App ID
	$fbAppSecret = "b62cb0fa9d74e2c8ce74198343938241";

	/*********************************/

	//Login for serving the Ajax routine
	if ( $_GET['ajax']=="yes" ) {

	$token = $_POST['token']; //get the access token from the User after he/she authorises the app
	$userData = json_decode(file_get_contents("https://graph.facebook.com/me?access_token=".$token), true); //get User's data using the Graph API
	echo $fbuid = "Facebook User ID: ".$userData['id']."<br />"; //User's Facebook ID
	echo $fbfname = "First Name: ".$userData['first_name']."<br />"; //User's First Name on Facebook
	echo $fblname = "Last Name: ".$userData['last_name']; //User's Last Name on Facebook

	} else {
	require "facebook.php";
	$facebook = new Facebook(array(
	'appId' => $fbAppId,
	'secret' => $fbAppSecret,
	'cookie' => true
	));
	$signed_request = $facebook->getSignedRequest();
	$like_status = $signed_request["page"]["liked"];
	//Normal HTML Page
	?>
	<!DOCTYPE html>
	<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml">
	<head>
	<script src="http://code.jquery.com/jquery-1.6.1.min.js" type="text/javascript"></script>
	<script type="text/javascript">
	function login(varr) {
	if ( varr == 1 ) { alert('Please Like This Page First, by Clicking the Like button Above!'); } else {
	//this function should be attached to your code's events which will initiate the Facebook login dialog.
	//After user authorises this app, we will get the Access Token, which is returned by Facebook in order
	//to find the current user' Facebook UID


	FB.getLoginStatus(function(response) {
	if (response.status === 'connected') {

	// the user is logged in and has authenticated your
	// app, and response.authResponse supplies
	// the user's ID, a valid access token, a signed
	// request, and the time the access token
	// and signed request each expire
	var uid = response.authResponse.userID;
	var accessToken = response.authResponse.accessToken;
	getFBuid(accessToken);

	} else if (response.status === 'not_authorized') {

	FB.login(function(response) {
	if (response.status === 'connected') {
	var uid = response.authResponse.userID; //we have got the User's facebook ID here
	var accessToken = response.authResponse.accessToken; //Access Token from facebook
	getFBuid(accessToken);
	} else {
	alert("There was an error :(");
	}
	},{scope:'email'});

	} else {

	FB.login(function(response) {
	if (response.status === 'connected') {
	var uid = response.authResponse.userID; //we have got the User's facebook ID here
	var accessToken = response.authResponse.accessToken; //Access Token from facebook
	getFBuid(accessToken);
	} else {
	alert("There was an error :(");
	}
	},{scope:'email'});

	}
	});


	}
	}
	function getFBuid(token) {

	//This function gets User's data from the Graph API with the help of the access token Received
	$("#loaderr").show();
	$.post("index.php?ajax=yes", {token: token},
	function(data) {
	$("#loaderr").hide();
	alert (data);
	$("#fbuid").html(data);
	});
	}
	</script>
	</head>
	<body>
	<div id="fb-root"></div>
	<script type="text/javascript" src="http://connect.facebook.net/en_US/all.js"></script>
	<script type="text/javascript">
	FB.init({
	appId : '<?php echo $fbAppId; ?>',
	status : true, // check login status
	cookie : true, // enable cookies to allow the server to access the session
	xfbml : true // parse XFBML
	});
	</script>
	<span id="fbuid">
	<?php if ($like_status) { ?>

	Facebook User ID: <a href="javascript: login(2)">Click to Get Uid</a> <!-- Note that we have attached the login() function
	to the Link as shown here, and explained above-->

	<?php } else { ?>

	Facebook User ID: <a href="javascript: login(1)">Click to Get Uid</a> <!-- Note that we have attached the login() function
	to the Link as shown here, and explained above-->

	<?php } ?>

	</span>
	<br /><br />
	<span id="loaderr" style="display: none;">Please Wait...</span>
	<br /><br />
	Full Tutorial on "How To Get Logged In / Current Facebook User’s ID On Iframe Page Tabs?" here: <a target="_blank" href="http://digitizor.com/?p=10437">digitizor.com/?p=10437</a>
	</body>
	</html>
	<?php } ?>