How to get Users Email Id in Facebook application using PHP?

Question

I have created a simple Facebook application in PHP, that greets user by there user name, I also want there Email id, to be displayed. But i am not able to do that. the code

Answer 1

Thanks for all the help. I finally figure out how to do that.

first, I need to get the access token, NOT the user session one, but the one for admin.

So, here is the code:

$url = 'https://graph.facebook.com/oauth/access_token';
$ch = curl_init();
$params = array(
                'grant_type'=>'client_credentials',
                'client_id'=>$appId,
                'client_secret'=>$secret,
                );

$opts[CURLOPT_POSTFIELDS] = http_build_query($params, null, '&');
// set URL and other appropriate options
curl_setopt_array($ch, $opts);
curl_setopt($ch, CURLOPT_URL, "$url");
curl_setopt($ch, CURLOPT_HEADER, 0);

// grab URL and pass it to the browser
$adminAccessToken = curl_exec($ch);
// close cURL resource, and free up system resources
curl_close($ch);

And then, I can use the facebook API to get any user who accept the application and the extended permission like that:

$fql    =   "select name, hometown_location, sex, pic_square, email from user where uid=1000000001";
    $param  =   array(
       'method'     => 'fql.query',
        'query'     => $fql,
        'access_token' =>$adminAccessToken ,
      'callback'    => ''
    );

    $fqlResult2   =   $facebook->api($param);

with the access token, i can also post things onto user's wall. :)