Geocoding API

A basic PHP client for working with Google's Geocoding API.

Note

Only PHP7+ and the cURL extension are required: in a production environment there are no other dependencies

Demo

If you'd like to see the library in action then you can execute tests/geocode.php, which runs a bunch of tests on the various Geocode methods.

Important

Before running tests/geocode.php, you must add a project's API key to tests/.config.php

Return Value

The geocoding methods, including Geocode::byAddress() and Geocode::byPostcode(), return an array on success, or throw an exception otherwise. The structure of the array is based on the Schema.org GeoCoordinates type and looks like the following.

Array
(
    [address] => Array
        (
            [streetAddress] => 25 Old Gardens Close
            [addressLocality] => Tunbridge Wells
            [addressRegion] => Kent
            [postalCode] => TN2 5ND
            [addressCountry] => GB
        )

    [latitude] => 51.1172303
    [longitude] => 0.2635245
)

Forward Geocoding

Examples of geocoding an address using the convenience method:

$geocode = new Geocode('<your-api-key>');

// Without using region biasing
$geoCoordinates = $geocode->byAddress('25 Old Gardens Close Tunbridge Wells TN2 5ND');

// `byAddress()` accepts an *ISO 3166-1 alpha-2 code* to apply bias by a specific country
$geoCoordinates = $geocode->byAddress('25 Old Gardens Close Tunbridge Wells TN2 5ND', 'GB');

An example of geocoding a postcode using the convenience method:

$geocode = new Geocode('<your-api-key>');

// `byPostcode()` *requires* a country; this is to help reduce ambiguity and, therefore, improve results
$geoCoordinates = $geocode->byPostcode('07001', 'ES');
  // => Palma, Majorca

Reverse Geocoding

An example of reverse-geocoding using the convenience method:

$geocode = new Geocode('<your-api-key>');
$geoCoordinates = $geocode->byLatLong('50.88916732998306', '-0.5768395884825535');
  // => Arundel, West Sussex, GB