file_get_contents設置ua

ini_set('user_agent', 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.80 Safari/537.36 Core/1.47.933.400 QQBrowser/9.4.8699.400');
$params = array();
$page = file_get_contents('https://www.facebook.com/dialog/oauth?'.http_build_query($params));