Get the name of the administrative place based on latitude and longitude from the Google Maps API. Includes transient caching and use of wp_remote_get-function.

get_administrative_name.php

function get_administrative_name($lat, $lng, $level = 'administrative_area_level_2', $expire = null) {

	if(!$expire)
		$expire = 60 * 60 * 24 * 7 * 4; // keep for a month

	$transient = 'cached_administrative_name_'. str_replace('.' , '', $lat) .''. str_replace('.' , '', $lng);

	if( false === ($place = get_transient( $transient ) ) ) {

		$city = 'https://maps.googleapis.com/maps/api/geocode/json?latlng='.$lat.','.$lng.'&sensor=false';

		$json = wp_remote_get( $city );
		$json = json_decode($json['body']);
		$json = $json->results[0]->address_components;

		foreach($json as $address) {
			if($address->types[0] == $level)
				$place = $address->long_name;
		}

		set_transient( $transient, $place );

	}

	return $place;
}