Get the facebook accounts value in a particular file - facebook

Question

I have used the facebook php sdk and I want to get the value in another file, so I give the redirection path, after login it is going on the page but $user is blank, when I am refreshing the page then I got the values. my code is like below
From where the login page is calling :
$facebook = new Facebook(array('appId' =>FB_APP_ID ,'secret' => FB_APP_SECRET));
$scope='email,user_birthday,user_location,user_work_history,user_about_me,user_hometown';
$parameters=array("redirect_uri"=>"http://www.xyz.com//test.php","scope"=>$scope);
$login_url= $facebook->getLoginUrl($parameters);
and the test.php is like below
$facebook = new Facebook(array(
'appId' => '224402951020359' ,
'secret' => 'd2731260cdd7425dc11eee5f265a3dee'
));
$user = $facebook->getUser();
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_data = $facebook->api('/me');
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
}
print_r($user_data);
How can I get the value in first time.

Answer 1

On your test.php page, put a test for !$user and if true then redirect again to the loginurl... something like the following is what I do in my code to avoid this same problem.
$loginUrl = $facebook->getLoginUrl(
array(
'scope' => 'email,publish_stream,user_birthday,user_location'
)
);
if ($user) {
try {
//get user basic description
$userInfo = $facebook->api("/$user");
$fb_access_token = $facebook->getAccessToken();
} catch (FacebookApiException $e) {
//you should use error_log($e); instead of printing the info on browser
error_log('Sharebox: '.$e); // d is a debug function defined at the end of this file
$user = null;
}
}
if (!$user) {
echo "<script type='text/javascript'>top.location.href = '$loginUrl';</script>";
exit;
}
Hope this helps.