Geocoder

Geocoder is a library which helps you build geo-aware applications. It provides an abstraction layer for geocoding manipulations.

HTTP Adapters

In order to talk to geocoding APIs, you need HTTP adapters. While it was part of the library in Geocoder 1.x and 2.x, Geocoder 3.x and upper now relies on the PSR-7 Standard which defines how HTTP message should be implemented. Choose any library that follows this PSR and implement the specified interfaces to use with Geocoder.

As making choices is rather hard, Geocoder requires the egeloen/http-adapter library.

Providers

Providers contain the logic to extract useful information.

Currently, there are many providers for the following APIs:

Address-based geocoding

provider	reverse	SSL	coverage	terms
Google Maps	yes	no	worldwide	requires API key. Limit 2500 requests per day
Google Maps for Business	yes	no	worldwide	requires API key. Limit 100,000 requests per day
Bing Maps	yes	no	worldwide	requires API key. Limit 10,000 requests per month.
OpenStreetMap	yes	no	worldwide	heavy users (>1q/s) get banned
Nominatim	yes	supported	worldwide	requires a domain name (e.g. local installation)
MapQuest	yes	no	worldwide	both open and commercial service require API key
OpenCage	yes	supported	worldwide	requires API key. 2500 requests/day free
Yandex	yes	no	worldwide
Geonames	yes	no	worldwide	requires registration, no free tier
TomTom	yes	required	worldwide	requires API key. First 2500 requests or 30 days free
ArcGIS Online	yes	supported	worldwide	requires API key. 1250 requests free
Chain				meta provider which iterates over a list of providers

IP-based geocoding

provider	IPv6	terms	notes
FreeGeoIp	yes
HostIp	no
IpInfoDB	no	city precision
Geoip	?		wrapper around the PHP extension
GeoPlugin	yes
GeoIPs	no	requires API key
MaxMind web service	yes	requires Omni API key	City/ISP/Org and Omni services, IPv6 on country level
MaxMind binary file	yes		needs locally installed database files
MaxMind GeoIP2	yes

The Geocoder Extra library contains even more providers!

Installation

The recommended way to install Geocoder is through Composer.

Create a composer.json file into your project:

{
    "require": {
        "willdurand/geocoder": "@stable"
    }
}

Protip: you should browse the willdurand/geocoder page to choose a stable version to use, avoid the @stable meta constraint.

And run these two commands to install it:

$ curl -sS https://getcomposer.org/installer | php
$ composer install

You're done.

Usage

First, you need an adapter to query an API:

<?php

$adapter  = new \Geocoder\HttpAdapter\BuzzHttpAdapter();

The BuzzHttpAdapter is tweakable, actually you can pass a Browser object to this adapter:

<?php

$buzz    = new \Buzz\Browser(new \Buzz\Client\Curl());
$adapter = new \Geocoder\HttpAdapter\BuzzHttpAdapter($buzz);

Now, you have to choose a provider which is closed to what you want to get.

FreeGeoIp

The FreeGeoIp named free_geo_ip is able to geocode IPv4 and IPv6 addresses only.

HostIp

The HostIp named host_ip is able to geocode IPv4 addresses only.

IpInfoDb

The IpInfoDb named ip_info_db is able to geocode IPv4 addresses only. A valid api key is required.

GoogleMaps

The GoogleMaps named google_maps is able to geocode and reverse geocode street addresses. A locale and a region can be set as well as an optional api key. This provider also supports SSL.

GoogleMapsBusiness

The GoogleMapsBusiness named google_maps_business is able to geocode and reverse geocode street addresses. A valid Client ID is required. The private key is optional. This provider also supports SSL.

BingMaps

The BingMaps named bing_maps is able to geocode and reverse geocode street addresses. A valid api key is required.

OpenStreetMap

The OpenStreetMap named openstreetmap is able to geocode and reverse geocode street addresses.

Nominatim

The Nominatim named nominatim is able to geocode and reverse geocode street addresses. Access to a Nominatim server is required. See the Nominatim Wiki Page for more information.

Geoip

The Geoip named geoip is able to geocode IPv4 and IPv6 addresses only. No need to use an HttpAdapter as it uses a local database. See the MaxMind page for more information.

Chain

The Chain named chain is a special provider that takes a list of providers and iterates over this list to get information.

MapQuest

The MapQuest named map_quest is able to geocode and reverse geocode street addresses. A valid api key is required. Access to MapQuest's licensed endpoints is provided via constructor argument.

OpenCage

The OpenCage named opencage is able to geocode and reverse geocode street addresses. A valid api key is required.

Yandex

The Yandex named yandex is able to geocode and reverse geocode street addresses. The default language-locale is ru-RU, you can choose between uk-UA, be-BY, en-US, en-BR and tr-TR. This provider can also reverse information based on coordinates (latitude, longitude). It's possible to precise the toponym to get more accurate result for reverse geocoding: house, street, metro, district and locality.

GeoPlugin

The GeoPlugin named geo_plugin is able to geocode IPv4 addresses and IPv6 addresses only.

GeoIPs

The GeoIPs named geo_ips is able to geocode IPv4 addresses only. A valid api key is required.

MaxMind

The MaxMind named maxmind is able to geocode IPv4 and IPv6 addresses only. A valid City/ISP/Org or Omni service's api key is required. This provider provides two constants CITY_EXTENDED_SERVICE by default and OMNI_SERVICE.

MaxMindBinary

The MaxMindBinary named maxmind_binary is able to geocode IPv4 and IPv6 addresses only. It requires a data file, and the geoip/geoip package must be installed.

It is worth mentioning that this provider has serious performance issues, and should not be used in production. For more information, please read issue #301.

GeoIP2Database

The GeoIP2 named maxmind_geoip2 is able to geocode IPv4 and IPv6 addresses only - it makes use of the MaxMind GeoIP2 databases or the webservice.

It requires either the database file, or the webservice - represented by the GeoIP2 , which is injected to the GeoIP2Adapter. The geoip2/geoip2 package must be installed.

This provider will only work with the corresponding GeoIP2Adapter.

Usage

<?php

// Maxmind GeoIP2 Provider: e.g. the database reader
$reader   = new \GeoIp2\Database\Reader('/path/to/database');

$adapter  = new \Geocoder\HttpAdapter\GeoIP2Adapter($reader);
$provider = new \Geocoder\Provider\GeoIP2($adapter);
$geocoder = new \Geocoder\Geocoder($provider);

$address   = $geocoder->geocode('74.200.247.59');

Geonames

The Geonames named geonames is able to geocode and reverse geocode places. A valid username is required.

TomTom

The TomTom named tomtom is able to geocode and reverse geocode street addresses. The default langage-locale is en, you can choose between de, es, fr, it, nl, pl, pt and sv. A valid api key is required.

ArcGISOnline

The ArcGISOnline named arcgis_online is able to geocode and reverse geocode street addresses. It's possible to specify a sourceCountry to restrict result to this specific country thus reducing request time (note that this doesn't work on reverse geocoding). This provider also supports SSL.

Using The Providers

You can use one of them or write your own provider. You can also register all providers and decide later. That's we'll do:

<?php

$geocoder = new \Geocoder\ProviderBasedGeocoder();
$geocoder->registerProviders(array(
    new \Geocoder\Provider\GoogleMaps(
        $adapter, $locale, $region, $useSsl
    ),
    new \Geocoder\Provider\GoogleMapsBusiness(
        $adapter, '<CLIENT_ID>', '<PRIVATE_KEY>', $locale, $region, $useSsl
    ),
    new \Geocoder\Provider\Yandex(
        $adapter, $locale, $toponym
    ),
    new \Geocoder\Provider\MaxMind(
        $adapter, '<MAXMIND_API_KEY>', $service, $useSsl
    ),
    new \Geocoder\Provider\ArcGISOnline(
        $adapter, $sourceCountry, $useSsl
    ),
    new \Geocoder\Provider\Nominatim(
        $adapter, 'http://your.nominatim.server', $locale
    ),
));

Parameters:

$locale is available for Yandex, BingMaps, OpenCage and TomTom
$region is available for GoogleMaps and GoogleMapsBusiness
$toponym is available for Yandex
$service is available for MaxMind
$useSsl is available for GoogleMaps, GoogleMapsBusiness, OpenCage, MaxMind and ArcGISOnline
$sourceCountry is available for ArcGISOnline
$rootUrl is available for Nominatim

Using The Chain Provider

As said it's a special provider that takes a list of providers and iterates over this list to get information. Note that it stops its iteration when a provider returns a result. The result is returned by GoogleMaps because FreeGeoIp and HostIp cannot geocode street addresses. BingMaps is ignored.

$geocoder = new \Geocoder\ProviderBasedGeocoder();
$adapter  = new \Geocoder\HttpAdapter\CurlHttpAdapter();
$chain    = new \Geocoder\Provider\Chain(array(
    new \Geocoder\Provider\FreeGeoIp($adapter),
    new \Geocoder\Provider\HostIp($adapter),
    new \Geocoder\Provider\GoogleMaps($adapter, 'fr_FR', 'France', true),
    new \Geocoder\Provider\BingMaps($adapter, '<API_KEY>'),
    // ...
));
$geocoder->registerProvider($chain);

try {
    $geocode = $geocoder->geocode('10 rue Gambetta, Paris, France');
    var_export($geocode);
} catch (Exception $e) {
    echo $e->getMessage();
}

Everything is ok, enjoy!

API

The main method is called geocode() which receives a value to geocode. It can be an IP address or a street address (partial or not).

<?php

$address = $geocoder->geocode('88.188.221.14');
// Result is:
// "latitude"       => string(9) "47.901428"
// "longitude"      => string(8) "1.904960"
// "bounds"         => array(4) {
//     "south" => string(9) "47.813320"
//     "west"  => string(8) "1.809770"
//     "north" => string(9) "47.960220"
//     "east"  => string(8) "1.993860"
// }
// "streetNumber"   => string(0) ""
// "streetName"     => string(0) ""
// "cityDistrict"   => string(0) ""
// "city"           => string(7) "Orleans"
// "zipcode"        => string(0) ""
// "county"         => string(6) "Loiret"
// "countyCode"     => null
// "region"         => string(6) "Centre"
// "regionCode"     => null
// "country"        => string(6) "France"
// "countryCode"    => string(2) "FR"
// "timezone"       => string(6) "Europe/Paris"

$address = $geocoder->geocode('10 rue Gambetta, Paris, France');
// Result is:
// "latitude"       => string(9) "48.863217"
// "longitude"      => string(8) "2.388821"
// "bounds"         => array(4) {
//     "south" => string(9) "48.863217"
//     "west"  => string(8) "2.388821"
//     "north" => string(9) "48.863217"
//     "east"  => string(8) "2.388821"
// }
// "streetNumber"   => string(2) "10"
// "streetName"     => string(15) "Avenue Gambetta"
// "cityDistrict"   => string(18) "20E Arrondissement"
// "city"           => string(5) "Paris"
// "county"         => string(5) "Paris"
// "countyCode"     => null
// "zipcode"        => string(5) "75020"
// "region"         => string(14) "Ile-de-France"
// "regionCode"     => null
// "country"        => string(6) "France"
// "countryCode"    => string(2) "FR"
// "timezone"       => string(6) "Europe/Paris"

The geocode() method returns an array of Address objects, each providing the following API:

getCoordinates() will return a Coordinates object (with latitude and longitude properties);
getLatitude() will return the latitude value;
getLongitude() will return the longitude value;
getBounds() will return an Bounds object (with south, west, north and east properties);
getStreetNumber() will return the street number/house number value;
getStreetName() will return the street name value;
getLocality() will return the locality or city;
getPostalCode() will return the postalCode or zipcode;
getSubLocality() will return the city district, or sublocality;
getCounty() will return a County object (with name and code properties);
getCountyCode() will return the county code (county short name);
getRegion() will return a Region object (with name and code properties);
getRegionCode() will return the region code (region short name);
getCountry() will return a Country object (with name and code properties);
getCountryCode() will return the ISO country code;
getTimezone() will return the timezone.

The ProviderBasedGeocoder's API is fluent, you can write:

<?php

$address = $geocoder
    ->registerProvider(new \My\Provider\Custom($adapter))
    ->using('custom')
    ->limit(10)
    ->geocode('68.145.37.34')
    ;

The using() method allows you to choose the provider to use by its name. When you deal with multiple providers, you may want to choose one of them. The default behavior is to use the first one but it can be annoying.

The limit() method allows you to configure the maximum number of results being returned. Depending on the provider you may not get as many results as expected, it is a maximum limit, not the expected number of results.

Reverse Geocoding

This library provides a reverse() method to retrieve information from coordinates:

$address = $geocoder->reverse($latitude, $longitude);

Dumpers

Geocoder provides dumpers that aim to transform an Address object in standard formats.

GPS eXchange Format (GPX)

The GPS eXchange format is designed to share geolocated data like point of interests, tracks, ways, but also coordinates. Geocoder provides a dumper to convert an Address object in an GPX compliant format.

Assuming we got a $address object as seen previously:

<?php

$dumper = new \Geocoder\Dumper\Gpx();
$strGpx = $dumper->dump($address);

echo $strGpx;

It will display:

<gpx
    version="1.0"
    creator="Geocoder" version="1.0.1-dev"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://www.topografix.com/GPX/1/0"
    xsi:schemaLocation="http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd">
    <bounds minlat="2.388911" minlon="48.863151" maxlat="2.388911" maxlon="48.863151"/>
    <wpt lat="48.8631507" lon="2.3889114">
        <name><![CDATA[Paris]]></name>
        <type><![CDATA[Address]]></type>
    </wpt>
</gpx>

GeoJSON

GeoJSON is a format for encoding a variety of geographic data structures.

Keyhole Markup Language (KML)

Keyhole Markup Language is an XML notation for expressing geographic annotation and visualization within Internet-based, two-dimensional maps and three-dimensional Earth browsers.

Well-Known Binary (WKB)

The Well-Known Binary (WKB) representation for geometric values is defined by the OpenGIS specification.

Well-Known Text (WKT)

Well-known text (WKT) is a text markup language for representing vector geometry objects on a map, spatial reference systems of spatial objects and transformations between spatial reference systems.

Formatters

A common use case is to print geocoded data. Thanks to the StringFormatter class, it's simple to format an Address object as a string:

<?php

// $address is an instance of Address
$formatter = new \Geocoder\Formatter\StringFormatter();

$formatter->format($address, '%S %n, %z %L');
// 'Badenerstrasse 120, 8001 Zuerich'

$formatter->format($address, '<p>%S %n, %z %L</p>');
// '<p>Badenerstrasse 120, 8001 Zuerich</p>'

Here is the mapping:

Street Number: %n
Street Name: %S
City: %L
City District: %D
Zipcode: %z
County: %P
County Code: %p
Region: %R
Region Code: %r
Country: %C
Country Code: %c
Timezone: %T

Extending Things

You can write your own provider by implementing the Provider interface.

You can provide your own dumper by implementing the Dumper interface.

Contributing

See CONTRIBUTING file.

Unit Tests

To run unit tests, you'll need cURL and a set of dependencies you can install using Composer:

composer install --dev

Once installed, run the following command:

phpunit

You'll obtain some skipped unit tests due to the need of API keys.

Rename the phpunit.xml.dist file to phpunit.xml, then uncomment the following lines and add your own API keys:

<php>
    <!-- <server name="IPINFODB_API_KEY" value="YOUR_API_KEY" /> -->
    <!-- <server name="BINGMAPS_API_KEY" value="YOUR_API_KEY" /> -->
    <!-- <server name="GEOIPS_API_KEY" value="YOUR_API_KEY" /> -->
    <!-- <server name="MAXMIND_API_KEY" value="YOUR_API_KEY" /> -->
    <!-- <server name="GEONAMES_USERNAME" value="YOUR_USERNAME" /> -->
    <!-- <server name="TOMTOM_GEOCODING_KEY" value="YOUR_GEOCODING_KEY" /> -->
    <!-- <server name="TOMTOM_MAP_KEY" value="YOUR_MAP_KEY" /> -->
    <!-- <server name="GOOGLE_GEOCODING_KEY" value="YOUR_GEOCODING_KEY" /> -->
    <!-- <server name="OPENCAGE_API_KEY" value="YOUR_API_KEY" /> -->
</php>

You're done.

Credits

William Durand [email protected]
All contributors

License

Geocoder is released under the MIT License. See the bundled LICENSE file for details.

Name		Name	Last commit message	Last commit date
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src/Geocoder		src/Geocoder
tests		tests
.gitignore		.gitignore
.travis.yml		.travis.yml
CHANGELOG.md		CHANGELOG.md
CONTRIBUTING.md		CONTRIBUTING.md
LICENSE		LICENSE
README.md		README.md
composer.json		composer.json
phpunit.xml.dist		phpunit.xml.dist

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Geocoder

HTTP Adapters

Providers

Installation

Usage

FreeGeoIp

HostIp

IpInfoDb

GoogleMaps

GoogleMapsBusiness

BingMaps

OpenStreetMap

Nominatim

Geoip

Chain

MapQuest

OpenCage

Yandex

GeoPlugin

GeoIPs

MaxMind

MaxMindBinary

GeoIP2Database

Usage

Geonames

TomTom

ArcGISOnline

Using The Providers

Using The Chain Provider

API

Reverse Geocoding

Dumpers

GPS eXchange Format (GPX)

GeoJSON

Keyhole Markup Language (KML)

Well-Known Binary (WKB)

Well-Known Text (WKT)

Formatters

Extending Things

Contributing

Unit Tests

Credits

License

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