https://github.com/maxmind/libmaxminddb
https://github.com/maxmind/MaxMind-DB-Reader-php
sudo apt install libmaxminddb0 libmaxminddb-dev mmdb-bin
wget https://github.com/maxmind/MaxMind-DB-Reader-php/archive/v1.8.0.tar.gz
tar xzf v1.8.0.tar.gz
cd MaxMind-DB-Reader-php-1.8.0/
cd ext
./configure –with-php-config=/usr/local/apache2/php/bin/php-config
make
make test
sudo make install
vi /usr/local/apache2/php/php.ini
extension=maxminddb.so