Why is Facebook PHP SDK getUser always returning 0?

user_853958 0
Viewed 57872

I'm trying to work with a website that requires some information from a Facebook user, I'm using PHP and JS SDKs.

I have a function in PHP:

public function isLoggedOnFacebook() {
    $user = $this->_facebook->getUser();
    if ($user) {
        return $this->_facebook->api("/$user");
    }
    return false;
}

On a class that is holding the facebook object from the SDK in $this->_facebook.

Then on a block I do this:

<?php if (!$this->isLoggedOnFacebook()): ?>
<div>
   <fb:login-button show-faces="true" perms="email" width="500" />
</div>
<?php endif ?>

And the FB JS environment is properly set up (I think) so it works. So the user gets the pop up and authorizes the site.

The problem is even after the app is been authorized by the user $user is always 0, meaning $facebook->getUser() always returns 0, and then lists the faces of users, including the logged user, but if I make it call $facebook->api('/me') or whatever, then it'll throw the invalid token exception.

I've seen this problem, but I haven't seen a solution, I have no idea where the problem is and I run out of ideas.

There's a Website tab on the developers' Facebook page in the apps section, where you can set up your Site URL and your Site Domain, and I'm thinking this are the cause of my problem, but I have no knowledge of exactly what these fields are supposed to contain.

facebook-graph-api facebook php
26 Answers

Check your config array. Ensure that you are using proper string encaps quotes when setting the values.

$config = array();
$config["appId"] = $APP_ID;
$config["secret"] = $APP_SECRET;
$config["fileUpload"] = false; // optional

This works.

$config = array();
$config[‘appId’] = 'YOUR_APP_ID';
$config[‘secret’] = 'YOUR_APP_SECRET';
$config[‘fileUpload’] = false; // optional

This is a direct copy/paste from the website http://developers.facebook.com/docs/reference/php/ and does NOT work because of the odd squiggly quotes.

the long answer is that your hash for your "checking" of the app signature is not coming out to a correct check, because the app secret is not returning a valid value (it's returning nothing, actually)... so the hash_hmac function is returning an incorrect value that doesn't match properly, etc...

user_12627040

I checked and test a long time, Now I found the reason.

Please login developer apps, in settings-->Advance-->Migrations-->Deprecate offline access-->disabled.

You will find $facebook->getUser() will work.

another thing. had better add domain when new the facebook class;

$facebook = new Facebook(array(
'appId' => APP_ID,//$app_id,
'secret' => APP_SECRET,//$app_secret,
'cookie' => true,
'domain'=>'xxxdomain.com',
));
$session = $facebook->getUser();
user_11177170
Related