facebook->getUser() returning 0

Question

Whenever I try to login a prompt opens asking for the basic permissions, after that its being redirected to my redirect_uri with an URL

=\">http://loc

Answer 1

It might be Worked using

$opts[CURLOPT_SSL_VERIFYPEER] = false;  after $opts = self::$CURL_OPTS; on file base_facebook.php. 

Answer 2

if someone is still banging their head over this here is what is wrong now. I was hired to fix this mess!

1. Check App domain in fb panel , must match with the domain where your app is.

2. edit base_facebook.php find:

   public function getAccessToken() {

   if ($this->accessToken !== null) {
     // we've done this already and cached it.  Just return.
     return $this->accessToken;
   }
   
   // first establish access token to be the application
   // access token, in case we navigate to the /oauth/access_token
   // endpoint, where SOME access token is required.
   $getApplicationAccessToken = $this->getApplicationAccessToken();
   $this->setAccessToken($getApplicationAccessToken);
   $user_access_token = $this->getUserAccessToken();
   if ($user_access_token) {
     $this->setAccessToken($user_access_token);
   }
   return $this->accessToken;
   

   }

to::

  public function getAccessToken() {

    if ($this->accessToken !== null) {
      // we've done this already and cached it.  Just return.
      return $this->accessToken;
    }

    // first establish access token to be the application
    // access token, in case we navigate to the /oauth/access_token
    // endpoint, where SOME access token is required.
    $getApplicationAccessToken = $this->getApplicationAccessToken();
    $this->setAccessToken($getApplicationAccessToken);
    $user_access_token = $this->getUserAccessToken();
    if ($user_access_token) {
      //$this->setAccessToken($user_access_token);
    $this->accessToken = $user_access_token; //edit; msolution
    }
    return $this->accessToken;
  }

3. Next find the function: getAccessTokenFromCode()

find the line:

parse_str($access_token_response, $response_params); 

replace it with:

//parse_str($access_token_response, $response_params); //edit:: msolution;;
$response_params = json_decode($access_token_response, true );

commenting the original and adding json_decode

thats it!

Answer 3

If User is logged in and still getting $user = 0 I faced this issue on different occasions but SDK issue is not happening to everyone. So I'm not sure what goes wrong here. But I dig in to it little bit and found solution as mentioned below.

SOLUTION : This worked for me after trying for many solutions for this issue.

In base_facebook.php file, find the makeRequest() method and check for following Line.

$opts = self::$CURL_OPTS; 

Immediately following it, add this line

$opts[CURLOPT_SSL_VERIFYPEER] = false;  

More details can be found here - http://net.tutsplus.com/tutorials/php/how-to-authenticate-your-users-with-facebook-connect/

Answer 4

After several hours, the solution for me was (Let's say my site is http://www.site123.com):

Settings @ https://developers.facebook.com

1. App Domain: site123.com (even blank it will work though)
2. Site URL: http://site123.com IMPORTANT : NOT http://www.site123.com

PHP Code - fb_config.php

//Declarations
$app_id     = "{you AppID}";
$app_secret = "{your App Secret}";
$site_url   = "http://site123.com/receive_data_from_facebook.php";

//New Facebook
$facebook = new Facebook(array(
'appId'     => $app_id,
'secret'    => $app_secret,
'cookie'    => TRUE, /* Optional */
'oath'      => TRUE  /* Optional */
));

//Login URL
$loginUrl = $facebook->getLoginUrl(array(
    'scope'     => 'email,user_birthday',
    'redirect_uri'  => $site_url,
    ));

//Get FacebookUserID
$fbuser = $facebook->getUser();

Important Note Also: I had some issues with Firefox $facebook->getUser() was 0 even my code was working on Chrome. But after cleaning Firefox cache, it worked nicely!

Hope it helps.

Answer 5

Change this

$loginUrl = $facebook->getLoginUrl(array ( 
        'display' => 'popup',
        'redirect_uri' => 'http://localhost/demo'
        ));

to

$loginUrl = $facebook->getLoginUrl(array ( 
        'display' => 'popup',
        'redirect_uri' => 'http://localhost/demo/index.php'
        ));

And see if this works !!