Libgeoip for php7.0 is only just starting to make its way through the repository -- I know it's currently not included in the QuickBox installer. The following commands work for Ubuntu 16.04 but I know the php7 repos for Debian 8 were missing a few packages last time I checked (notably php-memcached):
sudo apt update
sudo apt install php7.0-dev php-geoip libgeoip-dev
I ran into some bugs installing php-geoip by itself (date added for torrents refused to set), so I believe the dev packages add some needed things for geoip to do its thing without causing a ruckus.
Edit: Looks like we should be good to go as of a couple days ago: https://www.dotdeb.org/2016/06/01/php-7-0-7-for-jessie/