php - getLoginUrl : The parameter app_id is required -

i trying integrate facebook authentication in php website.

i used below code:

<?php     require '../facebook-php-sdk-master/src/facebook.php';      $app_id = 'some app id';     $app_secret = 'some secret';     $app_url = 'http://localhost/some app/';     $scope = 'email,publish_actions';      // init facebook sdk     $facebook = new facebook(array(                                    'appid'  => $app_id,                                    'secret' => $app_secret,                                    ));      // current user     $user = $facebook->getuser();      // if user has not installed app, redirect them login dialog     if ($user <> '0' && $user <> '') { /*if valid user id i.e. neither 0 nor blank nor null*/         try {         $loginurl = $facebook->getloginurl(array(                                                  'scope' => $scope,                                                  'redirect_uri' => $app_url,                                                  ));         die('<script>top.location.href="'.$facebook->getloginurl($params).'";</script>');         }         catch (facebookapiexception $e) { /*sometimes shows user id if user in not logged in , results in oauth exception. in case set 0.*/             error_log($e);             $user = '0';         }     }     else     {         echo 'user not found';     } ?> 

problem is:

though specifying , using correct app id, getting error message- the parameter app_id required.

i think facing similar problem- till getting “the parameter app_id required” error on facebook api login, there no accepted answer question.

please suggest if missing anything.

the parameter should appid you've set in new facebook(...);.

you can try override calling following after see if resolves issue:

$facebook->setappid('some app id');