Why does a browser update message pop up when I try to parse a facebook page?

Question

PHP

header('Content-type: text/html; charset-utf-8');
$url = 'https://www.facebook.com/groups/1139901032734300';
$file = file_get_contents($url);
print_r($file);

How to solve this issue?

Answer 1

User-Agent must be added

Answer 2

1. Learn to watch your browser's traffic exchange.
2. Learn to use multi_curl() (documentation available on php.net) and repeat browser requests 1-to-1.