Answer 1

PHP doesn't not provide clients geographical information by itself

Answer 2

Javascript has the same API built in. But may need https

Answer 3

https://www.sololearn.com/Discuss/1203064/how-to-get-current-location-of-user-only-city-and-country-name-using-php

Answer 4

https://stackoverflow.com/questions/409999/getting-the-location-from-an-ip-address