https://stackoverflow.com/questions/5232242/google-api-get-nearest-locations
http://www.geonames.org/export/codes.html
http://gd.geobytes.com/GetNearbyCities?key=e1dbb684d8489f3b13be0faff9a91522&radius=15.53425&Latitude=25.7616798&Longitude=-80.1917902&limit=999
using query
https://vijaylathiya.wordpress.com/2016/05/01/get-records-between-lat-long-radius-in-wordpress-php-mysql/
