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get-list-of-friends-names.php
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get-list-of-friends-names.php
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<?php
session_start();
require_once __DIR__ . '/src/Facebook/autoload.php'; // download official fb sdk for php @ https://github.com/facebook/php-graph-sdk
$fb = new Facebook\Facebook([
'app_id' => 'APP_ID',
'app_secret' => 'APP_SECRET',
'default_graph_version' => 'v2.12',
]);
$helper = $fb->getCanvasHelper();
$permissions = ['user_friends']; // optionnal
try {
if (isset($_SESSION['facebook_access_token'])) {
$accessToken = $_SESSION['facebook_access_token'];
} else {
$accessToken = $helper->getAccessToken();
}
} 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: ' . $e->getMessage();
exit;
}
if (isset($accessToken)) {
if (isset($_SESSION['facebook_access_token'])) {
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
} else {
$_SESSION['facebook_access_token'] = (string) $accessToken;
// OAuth 2.0 client handler
$oAuth2Client = $fb->getOAuth2Client();
// Exchanges a short-lived access token for a long-lived one
$longLivedAccessToken = $oAuth2Client->getLongLivedAccessToken($_SESSION['facebook_access_token']);
$_SESSION['facebook_access_token'] = (string) $longLivedAccessToken;
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
}
// validating the access token
try {
$request = $fb->get('/me');
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
if ($e->getCode() == 190) {
unset($_SESSION['facebook_access_token']);
$helper = $fb->getRedirectLoginHelper();
$loginUrl = $helper->getLoginUrl('https://apps.facebook.com/APP_NAMESPACE/', $permissions);
echo "<script>window.top.location.href='".$loginUrl."'</script>";
}
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
// get list of friends' names
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 $key['name'] . "<br>";
}
echo count($allFriends);
} else {
$allFriends = $friends->asArray();
$totalFriends = count($allFriends);
foreach ($allFriends as $key) {
echo $key['name'] . "<br>";
}
}
// Now you can redirect to another page and use the access token from $_SESSION['facebook_access_token']
} else {
$helper = $fb->getRedirectLoginHelper();
$loginUrl = $helper->getLoginUrl('https://apps.facebook.com/APP_NAMESPACE/', $permissions);
echo "<script>window.top.location.href='".$loginUrl."'</script>";
}