How can I get facebook friends list email addresses?

Question

Is there anyone who knows how to get a friends list of email address using Facebook PHP SDK?

Answer 1

No, apps can not get friend emails as stated in Email Permissions document. Quote from document:

Note: There is no way for apps to obtain email addresses for a user's friends.

Answer 2

Get information from this links:

Procedure

Statckoverflow discussion

If the user/friend has not given your app email permissions, chances are you won’t be able to get the email address. For instances like these, you can opt to filter just the friends who have given your app permissions. This can be done using the is_app_user field:

SELECT uid, first_name, last_name FROM user 
  WHERE is_app_user = 1 AND uid IN (SELECT uid2 FROM friend WHERE uid1 = $userId)

Get Updated Answer:

$appId     = 'YOUR_APP_ID';
$appSecret = 'YOUR_APP_SECRET';

$userId          = 'A_FACEBOOK_USER_ID';
$userAccessToken = 'THE_FACEBOOK_USER_ACCESS_TOKEN';

$client = new Facebook(array('appId' => $appId, 'secret' => $appSecret));

// get all friends who has given our app permissions to access their data
$fql = "SELECT uid, first_name, last_name, email FROM user "
     . "WHERE is_app_user = 1 AND uid IN (SELECT uid2 FROM friend WHERE uid1 = $userId)";
$friends = $client->api(array(
  'method'       => 'fql.query',
  'access_token' => $userAccessToken,
  'query'        => $fql,
));

// make an array of all friend ids
$friendIds = array();
foreach ($friends as $friend) {
  $friendIds[] = $friend['uid'];
}

// get info of all the friends without using any access token
$friendIds = implode(',', $friendIds);
$fql = "SELECT uid, first_name, last_name, email FROM user WHERE uid IN ($friendIds)";
$friends = $client->api(array(
  'method' => 'fql.query',
  'query'  => $fql,
  // don't use an access token
));

// we should now have a list of friend infos with their email addresses
print_r($friends);

Answer 3

You cannot do that

http://developers.facebook.com/docs/reference/api/permissions/

email field only available for the users that connected to your application and have given email extended permission

Answer 4

A user's email is a protected property and access to that information must be specifically requested by the app and granted by the user.

Note: There is no way for apps to obtain email addresses for a user's friends.

Answer 5

There is no way for apps to obtain email addresses for a user's friends. See the documentation https://developers.facebook.com/docs/reference/login/email-permissions/

Answer 6

you have access to the user's friend list. Since these friends may not have authorized your application, you are only able to access a more limited set of data by default: only name, profile picture, gender, networks. Most other parts of the Facebook profile (e.g. interests, checkins, groups) are available via the Graph API if the user has granted you specific permissions. This applies to both the user's info as well as his/her friends' info. information is available subject to the user's privacy settings.