This question already exists:
Facebook getUser() always returns 0 [duplicate]
Closed 10 years ago.
This Facebook PHP SDK is driving me CRAZY!
getUser() always return 0
let me explain what I do:
$facebook = new Facebook(array(
'appId' => FACEBOOK_APP_ID,
'secret' => FACEBOOK_SECRET,
));
$user = $facebook->getUser();
if ($user === 0)
{
$loginUrl = $facebook->getLoginUrl(array(
'scope' => 'email, publish_stream',
'redirect_uri' => FB_REDIRECT_URI
));
echo "<script type='text/javascript'>window.location = '$loginUrl';</script>";
exit();
}
simple code, equals to the example. Good...
I have this code in login.php and complete.php
I send the request from login.php and set the redirect_uri to complete.php (the same I wrote in Website with Facebook Login...obviously a complete URL like https://www.example.com/complete.php)
I really do not understand Why I still get 0!
It is not possible, Im logged in Facebook following the LoginURL.
I also passed the "permissions" with the URL.
I already registered at this app, so I really do not understand the reason why this SDK is continuing to return 0.
Could someone help me?
INFO:
I only have selected Website with Facebook Login, nothing else... "App on Facebook" is not selected.
EDIT:
https://www.facebook.com/login.php?api_key=216182291818102&skip_api_login=1&display=page&cancel_url=https%3A%2F%2Fwww.example.com%2Fusers%2Fcomplete%2F%3Ferror_reason%3Duser_denied%26error%3Daccess_denied%26error_description%3DThe%2Buser%2Bdenied%2Byour%2Brequest.%26state%3D720fab495a21639032816d3c688ae87b&fbconnect=1&next=https%3A%2F%2Fwww.facebook.com%2Fdialog%2Fpermissions.request%3F_path%3Dpermissions.request%26app_id%3D216182291818102%26redirect_uri%3Dhttps%253A%252F%252Fwww.example.com%252Fusers%252Fcomplete%252F%26display%3Dpage%26response_type%3Dcode%26state%3D720fab495a21639032816d3c688ae87b%26perms%3Duser_birthday%252Cemail%26fbconnect%3D1%26from_login%3D1%26client_id%3D216182291818102&rcount=1
i am used same example and it's work for me.
my connection is like this,try to add cookie = true and check, hope will work for you
$facebook = new Facebook(array(
'appId' => FACEBOOK_APP_ID,
'secret' => FACEBOOK_SECRET,
'cookie' => true,
));
Where did you get the example from? This is from the FB Developer page (https://developers.facebook.com/docs/authentication/server-side/):
<?php
$app_id = "YOUR_APP_ID";
$app_secret = "YOUR_APP_SECRET";
$my_url = "YOUR_URL";
session_start();
$code = $_REQUEST["code"];
if(empty($code)) {
$_SESSION['state'] = md5(uniqid(rand(), TRUE)); //CSRF protection
$dialog_url = "https://www.facebook.com/dialog/oauth?client_id="
. $app_id . "&redirect_uri=" . urlencode($my_url) . "&state="
. $_SESSION['state'];
echo("<script> top.location.href='" . $dialog_url . "'</script>");
}
if($_SESSION['state'] && ($_SESSION['state'] === $_REQUEST['state'])) {
$token_url = "https://graph.facebook.com/oauth/access_token?"
. "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url)
. "&client_secret=" . $app_secret . "&code=" . $code;
$response = file_get_contents($token_url);
$params = null;
parse_str($response, $params);
$graph_url = "https://graph.facebook.com/me?access_token="
. $params['access_token'];
$user = json_decode(file_get_contents($graph_url));
echo("Hello " . $user->name);
}
else {
echo("The state does not match. You may be a victim of CSRF.");
}
?>
Your code is looking good. You should provide one more parameter to facebook array that is cookie=>true. You should refer the following tutorial which worked for me.
http://www.9lessons.info/2011/02/login-with-facebook-and-twitter.html
Hope it will work for you.
Now I am posting the configuration of APP.
App ID/API Key
xxxxxxxxxxxxxxxxxx // your App ID
App Secret
xxxxxxxxxxxxxxxxxxxxxxx //Your secret key
Site URL
http://localhost/ //your site url
Contact Email
example#example.com //your email id
Support URL
http://localhost //your support url
I only provided this much information and its perfectly working for me.
Try this
$facebook = new Facebook(array(
'appId' => FACEBOOK_APP_ID,
'secret' => FACEBOOK_SECRET,
'cookie' => true,
));
and first you login in facebook account then execute this code.
$user=$facebook->getUser();
Related
I have a problem when using facebook authentication.
<?php
$user = null;
try{
include_once "fb/facebook.php";
}
catch(Exception $o){
error_log($o);
}
$facebook = new Facebook(array(
'appId' => $fbconfig['appid'],
'secret' => $fbconfig['secret'],
'cookie' => true
));
$loginUrl = $facebook->getLoginUrl(array(
'scope' => 'publish_stream,email',
//'redirect_uri' => 'https://www.facebook.com/pages/MediaEngine/304221192963546?id=304221192963546&sk=app_143090482526977'
));
$user = $facebook->getUser();
if($user){
try{
$user_profile = $facebook->api('/me');
$permissions = $facebook->api('/me/permissions');
}catch(FacebookException $e){
}
}else{
echo "<script type='text/javascript'>top.location.href = '$loginUrl';</script>";
}
?>
When the user accepted the app, it will redirect user to tab page(http://apps4you.hu), user wont stay on facebook, but only 1st time will do that if the user close and come back to app on facebook(already authenticated) it works fine in iframe.
If I use the redirect_uri => my_app , it will redirect and redirect and redirect but never will work the app, the browser just loading and loanding but nothing happends.
I spent days to fix this problem but I could not find any solution.
Any idea whats wrong?
Change $loginUrl as below and try:
$_SESSION['state'] = md5(uniqid(rand(), TRUE)); // CSRF protection
$loginUrl _url = "https://www.facebook.com/dialog/oauth?client_id="
. APP_ID . "&redirect_uri=" . urlencode($next) . "&state="
. $_SESSION['state'] . "&scope=".$permissions;
I am developing my first facebook app, which includes creating a new album and posting photos to the user wall. By learning through facebook documentation and few tutorial and came up this code, but I am getting following error with it.
Fatal error: Uncaught OAuthException: Error validating application. Thrown in /home/base_facebook.php on line 1106
Plus: I don’t know if it matters or not, but when I am printing out the
echo $facebook->getUser();
variable it giving me ‘0’ in return even though user (which in this case is myself) is logged in.
Kindly help me through this.
Code:
$config = array(
'appId' => '3663250024856',
'secret' => 'b14ac6d2b7dbdtyb259599b06983e881',
'fileUpload' => true,
'cookie' => true
);
$facebook = new Facebook($config);
echo "USER STATUS:".$facebook->getUser();
$facebook -> setFileUploadSupport(true);
$album_details = array('message' => 'Album desc', 'name' => 'Album name');
$create_album = $facebook -> api('/me/albums', 'post', $album_details);
$album_uid = $create_album['id'];
$photo_details = array('message' => 'Photo message');
$file = "temp/".$imageName;
$photo_details['image'] = '#' . realpath($file);
$upload_photo = $facebook -> api('/' . $album_uid . '/photos', 'post', $photo_details);
The best working solution I've found in the web. Add the below code at the top of your php page:
$app_id = "YOUR_APP_ID";
$app_secret = "YOUR_APP_SECRET";
$my_url = "YOUR_URL";
$code = $_REQUEST["code"];
if(empty($code)) {
$_SESSION['state'] = md5(uniqid(rand(), TRUE)); //CSRF protection
$dialog_url = "http://www.facebook.com/dialog/oauth?client_id="
. $app_id . "&redirect_uri=" . urlencode($my_url) . "&state="
. $_SESSION['state'];
echo("<script> top.location.href='" . $dialog_url . "'</script>");
}
if($_REQUEST['state'] == $_SESSION['state']) {
$token_url = "https://graph.facebook.com/oauth/access_token?"
. "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url)
. "&client_secret=" . $app_secret . "&code=" . $code;
$response = #file_get_contents($token_url);
$params = null;
parse_str($response, $params);
$graph_url = "https://graph.facebook.com/me?access_token="
. $params['access_token'];
}
Even though the user is logged in, the user needs to give permission to your app before you can make api calls.
Basically the flow for user authentication using facebook php sdk should be like this:
Detect whether the user is logged in and given permission to your app.
If he hasn't given permission, redirect him to the login and application permission page. After logging in and giving permission, he'll be redirected back again to your application page.
Otherwise, show the content of your app, make api calls,...
Here is a modified sample code from the php sdk's documentation page to handle authentication that should work if you just modify the appId, appSecret and redirect_uri:
<?php
require_once 'fb_php_sdk/facebook.php';
$appId = 'your_app_id';
$appSecret = 'your_app_secret';
// Create your Application instance (replace this with your appId and secret).
$facebook = new Facebook(
array(
'appId' => $appId,
'secret' => $appSecret,
'fileUpload' => true,
'cookie' => true
));
// Get User ID
$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);
$user = null;
}
}
// Login or logout url will be needed depending on current user state.
if ($user)
{
$logoutUrl = $facebook->getLogoutUrl();
}
else
{
$loginUrl = $facebook->getLoginUrl(
array(
'canvas' => 1,
'fbconnect' => 0,
'scope' => '',//these are the extended permissions you will need for your app, add/remove according to your requirement
'redirect_uri' => 'http://apps.facebook.com/test_app_azk/',//this is the redirect uri where user will be redirected after allow,
));
}
if ($user)
{
//show the content of your app
//make api calls
var_dump($user_profile);
}
else
{
//redirect user to loginUrl
echo "<script>parent.location = '".$loginUrl."';</script>";
}
Hope this helps.
The problem might lie within the else statement. Instead of using else use if(!user). That should fix the issue.
I am developing a facebook app using PHP.
I am able to login using the below code
<?php
$app_id = "XXXXXXXXXXXXXXXXX";
$canvas_page = "http://apps.facebook.com/sandysfirst/";
$auth_url = "http://www.facebook.com/dialog/oauth?client_id="
. $app_id . "&redirect_uri=" .urlencode($canvas_page)."&scope="."publish_stream,read_stream,offline_access";
$signed_request = $_REQUEST["signed_request"];
list($encoded_sig, $payload) = explode('.', $signed_request, 2);
$data = json_decode(base64_decode(strtr($payload, '-_', '+/')), true);
if (empty($data["user_id"])) {
echo("<script> top.location.href='" . $auth_url . "'</script>");
} else {
}?>
<?php
include_once "src/facebook.php";
$app_id = 'XXXXXXXXXXXXXXXXXXX';
$application_secret = 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
$facebook = new Facebook(array(
'appId' => $app_id,
'fileUpload' =>true,
'secret' => $application_secret,
'cookie' => true, // enable optional cookie support
));
if ($facebook->getSession()) {
$user = $facebook->getUser();
$uid = $facebook->getUser();
$fbme = $facebook->api('/me');
echo "<br/><br/><br/><br/> Welcome ".$fbme['name'];
}
echo "<html>
and the HTML follows below that with a form action.
I want to know how I can get the same user id or session on the second page once the form is submitted.
I am not using facebook.php of sdk 3.0.
I don't know the facebook api, but from some basic php there's a few methods you could use:
1 - Add the uid as a hidden field in the form.
<input type="hidden" name="uid" value="$uid">
2 - Add it to the action url
<form action="submit.php?uid=$uid">
However the better way is to use the facebook api, pretty much the same way you've got it listed there already (from the include_once "src/facebook.php";), to retrieve the uid each time, otherwise you leave it open to security hacks (easy to pass a fake uid in a form).
As title says I have a strange problem. When I click another link on my index page,it redirects to index again. I'm writing the same permission code on both pages.
Here is my code:
<?php
$code = $_REQUEST["code"];
if(empty($code)) {
$dialog_url = "http://www.facebook.com/dialog/oauth?client_id="
. $app_id . "&redirect_uri=" . urlencode($my_url) . "&scope=email,publish_stream,offline_access";
echo("<script> top.location.href='" . $dialog_url . "'</script>");
}
$token_url = "https://graph.facebook.com/oauth/access_token?client_id="
. $app_id . "&redirect_uri=" . urlencode($my_url) . "&client_secret="
. $app_secret . "&code=" . $code . "&scope=email,publish_stream,offline_access";
$access_token = file_get_contents($token_url);
$graph_url = "https://graph.facebook.com/me?" . $access_token;
$user = json_decode(file_get_contents($graph_url));
?>
I'm writing this code all pages that I've linked on my index.
Is my code wrong, have a server problem or something else ?
Do the URLs in the links on the index page contain a code variable. If it's not explicitly declared in the query string portion of URL the Oauth dialog will be triggered and, if the app is already installed, the user will be redirected to $my_url.
On a side note, judging from your code you could benefit from using the existing Facebook PHP SDK. Here's a code snippet that uses the current (v3.0.0) SDK that contains the behaviour listed above:
require 'facebook.php';
$facebook = new Facebook(array(
'appId' => 'YOUR_APP_ID',
'secret' => 'YOUR_APP_SECRET',
));
$fb_user_id = $facebook->getUser();
if ($fb_user_id) {
try {
$user = $facebook->api('/me');
} catch (FacebookApiException $e) {
$fb_user_id = null;
$params = array(
'redirect_uri' => $my_url,
'scope' => 'email,publish_stream,offline_access' );
$dialog_url = $facebook->getLoginUrl($params);
echo("<script> top.location.href='" . $dialog_url . "'</script>");
}
}
I am using the following code to try and retrieve a Page's insights using FQL. Obviously I've stripped out the App ID, App Secret, URL, and Object ID (in the FQL query).
The page logs in the user correctly, and asks for the "read_insights" permission. I am logging in as a user that is an admin for the Page I am trying to access.
The response I'm getting is:
Array ( [0] => Array ( [metric] => page_like_adds [value] => 0 ) )
I'm brand new to FQL, so I'm sure I'm doing something dumb here.
<?php
require_once('facebook/src/facebook.php');
define('APP_ID', '');
define('APP_SECRET', '');
$facebook = new Facebook(array(
'appId' => '',
'secret' => '',
'cookie' => true,
));
$app_id = "";
$app_secret = "";
$my_url = "";
session_start();
$code = $_REQUEST["code"];
if(empty($code)) {
$_SESSION['state'] = md5(uniqid(rand(), TRUE)); //CSRF protection
$dialog_url = "https://www.facebook.com/dialog/oauth?client_id="
. $app_id . "&redirect_uri=" . urlencode($my_url) . "&state="
. $_SESSION['state'] . "&scope=read_insights";
echo("<script> top.location.href='" . $dialog_url . "'</script>");
}
if($_REQUEST['state'] == $_SESSION['state']) {
$token_url = "https://graph.facebook.com/oauth/access_token?"
. "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url)
. "&client_secret=" . $app_secret . "&code=" . $code;
$token = file_get_contents($token_url);
$params = null;
parse_str($token, $params);
} else {
echo("");
}
$fql = "SELECT metric, value FROM insights WHERE object_id=OBJECT_ID AND metric='page_like_adds' AND end_time=1272351600 AND period=86400";
$fqlresponse = $facebook->api(array(
'method' => 'fql.query',
'query' =>$fql,
));
print_r($fqlresponse);
?>
With your FQL:
$fql = "SELECT metric, value FROM insights WHERE object_id=OBJECT_ID AND metric='page_like_adds' AND end_time=1272351600 AND period=86400";
you're selecting the metric "page_like_adds", which is "Likes of your Page's content" till "1272351600", which is "Tuesday, April 27th 2010".
So I guess, your query is not, what you want.
Which insigh metrics do you want from your page?
I suggest to read: https://developers.facebook.com/docs/reference/fql/insights/ (the official Docs too FQL metrics)
You may also try the Graph API to access insights:
https://developers.facebook.com/tools/explorer/