Hey luceos!
/var/www/html/flarum$ php --version
PHP 7.1.25-1+ubuntu18.04.1+deb.sury.org+1 (cli) (built: Dec 7 2018 08:15:52) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.1.25-1+ubuntu18.04.1+deb.sury.org+1, Copyright (c) 1999-2018, by Zend Technologies
var/www/html/flarum$ php -m | grep curl
curl