facebook检索用户个人信息

$fb = new FacebookFacebook([
  'app_id' => '{app-id}',                           
  'app_secret' => '{app-secret}',                   //app的密令
  'default_graph_version' => 'v2.8',                
  //'default_access_token' => '{access-token}',     //可选配置项
]);

// Use one of the helper classes to get a FacebookAuthenticationAccessToken entity.
//   $helper = $fb->getRedirectLoginHelper();
//   $helper = $fb->getJavaScriptHelper();
//   $helper = $fb->getCanvasHelper();
//   $helper = $fb->getPageTabHelper();

try {
  // Get the FacebookGraphNodesGraphUser object for the current user.
  // If you provided a 'default_access_token', the '{access-token}' is optional.

  $response = $fb->get('/me', '{access-token}');
  //$response = $fb->get('/me?fields=id,name,picture,birthday,gender','{access-token}'); 获取该用户的id,姓名,头像,生日,性别
} catch(FacebookExceptionsFacebookResponseException $e) {
  // When Graph returns an error
  echo 'Graph returned an error: ' . $e->getMessage();
  exit;
} catch(FacebookExceptionsFacebookSDKException $e) {
  // When validation fails or other local issues
  echo 'Facebook SDK returned an error: ' . $e->getMessage();
  exit;
}

$me = $response->getGraphUser();
//$me = $response->getGraphUser()->asArray();   直接获取数组

echo 'Logged in as ' . $me->getName();