我应该怎么获得的Facebook用户的好友列表，并在PHP他们的个人资料图片的使用图形API？

Question

I am using this code to get the user friend's list. For profile picture i am unable to find any reference please guide if you know the process

$facebook = new Facebook($config);

$user_id = $facebook->getUser();
$iLimit=99;
if($user_id) {

     // We have a user ID, so probably a logged in user.
     // If not, we'll get an exception, which we handle below.

     try {

       $user_profile = $facebook->api('/me','GET');
      echo"<h3>";

echo 'Name: ' . $user_profile['name'];
echo"</h3>";
$profile_pic =  "http://graph.facebook.com/".$user_id."/picture";

echo "<img src=\"" . $profile_pic . "\" />"; 
$user_friends = $facebook->api('/me/friends', 'GET' );
print_r($user_friends);            //Given NULL Value 
echo "</pre>";\

Returning null value

Answer 1

请参阅Facebook的图形API文档https://developers.facebook.com/docs/graph-api/reference/friend-list/这里是教程中的代码http://www.sanwebe.com/2011/10 / facebook-friends-list-pagewise-with-php希望对您有所帮助！