Facebook-PHP-SDK Getting friends list is very slow - php

Question

Using below code to get friend's list ,But its takes lot of time to give the result.How can I get the result quicker.Can anyone help me to solve this issue?
or is there any other way I can get friends list?
try {
$requestFriends = $fb->get('/me/taggable_friends?fields=name&limit=100');
$friends = $requestFriends->getGraphEdge();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
// if have more friends than 100 as we defined the limit above on line no. 68
if ($fb->next($friends)) {
$allFriends = array();
$friendsArray = $friends->asArray();
$allFriends = array_merge($friendsArray, $allFriends);
while ($friends = $fb->next($friends)) {
$friendsArray = $friends->asArray();
$allFriends = array_merge($friendsArray, $allFriends);
}
foreach ($allFriends as $key) {
echo $key['name'] . "<br>";
}
} else {
$allFriends = $friends->asArray();
$totalFriends = count($allFriends);
$counter = 0;
foreach ($allFriends as $key) {
echo $key['name'] . "<br>";
$counter++;
}
echo $counter;
}