README

Small library for parsing, formatting, and representing coordinates. This library supports multiple coordinate formats, is well-tested, and is used by the software behind Wikipedia and Wikidata.

On Packagist:

Usage

To parse a string to a LatLongValue object you use one of the coordinate parsers.

$parser = new LatLongParser();
$latLongValue = $parser->parse('55.7557860 N, 37.6176330 W');
var_dump($latLongValue->getLongitude()); // float: -37.6176330

These parsers are provided:

LatLongParser - Facade for format-specific parsers. In most cases, you will be using this one
DdCoordinateParser - Parses decimal degree coordinates
DmCoordinateParser - Parses decimal minute coordinates
DmsCoordinateParser - Parses degree minute second coordinates
FloatCoordinateParser - Parses float coordinates
GlobeCoordinateParser - Parses coordinates into GlobeCoordinateValue objects

To turn a coordinate object into a string you use one of the coordinate formatters.

$formatter = new LatLongFormatter();
$coordinateString = $formatter->format(new LatLongValue(42.23, 13.37));

These formatters are provided:

LatLongFormatter - Formats a LatLongValue into any of the supported formats
GlobeCoordinateFormatter - Formats a GlobeCoordinateValue

To represent a set of coordinates you use one of the Value Objects.

LatLongValue has a float latitude and longitude. GlobeCoordinateValue wraps LatLongValue and adds a precision and a globe identifier.

The supported coordinate formats are:

Degree minute second (55° 45' 20.8296", -37° 37' 3.4788" or 55° 45' 20.8296" N, 37° 37' 3.4788" W)
Decimal minute (55° 30', -37° 30' or 55° 30' N, 37° 30' W)
Decimal degree (55.7557860°, -37.6176330° or 55.7557860° N, 37.6176330° W)
Float (55.7557860, -37.6176330 or 55.7557860 N, 37.6176330 W)

The parsers and formatters allow you to customize the used symbols for degrees, minutes, and seconds and to change the letters used to indicate the direction (N, E, S, W).

Requirements

Geo 4.x: PHP 7.1 or later (tested with PHP 7.1 up to PHP 8.4)

Geo 3.x: PHP 5.5 or later (tested with PHP 5.5 up to PHP 7.4 and HHVM)

Installation

To add this package as a local, per-project dependency to your project, simply add a dependency on data-values/geo to your project's composer.json file. Here is a minimal example of a composer.json file that just defines a dependency on version 4.x of this package:

    {
        "require": {
            "data-values/geo": "^4.0.0"
        }
    }

Running the tests

For tests only

composer test

For style checks only

composer cs

For a full CI run

composer ci

Authors

DataValues Geo is based upon and contains a lot of code written by Jeroen De Dauw for the Maps and Semantic MediaWiki projects.

Significant contributions were made by the Wikidata team, as Wikimedia Germany employees for the Wikidata project.

Release notes

4.6.0 (2025-09-23)

Updated requirement for data-values/interfaces to ^1.1.0
Dropped support for PHP 7.4 and 8.0
Testing on PHP 8.4

4.5.1 (2025-01-06)

Restored support for PHP 7.4

4.5.0 (2024-12-10)

Dropped support for PHP 7.3 and 7.4
Improved support for PHP 8.4 by explicitly declaring nullable types
Upgraded mediawiki/mediawiki-codesniffer rules to version 45.0.0
Added testing with PHP 8.2 and 8.3

4.4.0 (2022-10-21)

Implemented __serialize and __unserialize in LatLongValue and GlobeCoordinateValue, improving compatibility with PHP 8.1
Added LatLongValue::getSerializationForHash; classes that use the PHP serialization of a LatLongValue for a hash should instead call this method

4.3.0 (2021-04-21)

Raised the minimum PHP version from 7.1 to 7.3

4.2.3 (2021-04-23)

GlobeCoordinateValue::newFromArray now supports numeric strings (thanks @Silvan-WMDE)

4.2.2 (2021-01-20)

Added compatibility with data-values/data-values 3.x
Added compatibility with data-values/interfaces 1.x

4.2.1 (2019-12-18)

Fixed GlobeCoordinateParser not being able to parse multiple values (4.2.0 regression)

4.2.0 (2019-09-20)

Added GlobeCoordinateValue::withPrecision

4.1.0 (2018-10-29)

Added "PHP strict types" to all files
LatLongValue no longer extends DataValueObject
GlobeCoordinateValue no longer extends DataValueObject
Reordered methods in LatLongValue and GlobeCoordinateValue for readability
Undeprecated LatLongValue::newFromArray
Undeprecated GlobeCoordinateValue::newFromArray

4.0.1 (2018-08-10)

Fixed parsing of coordinates with lowercase S/W directions
Fixed parsing DMS coordinates that omit a single minute number

3.0.1 (2018-08-01)

Fixed parsing of coordinates with lowercase S/W directions

2.1.2 (2018-08-01)

Fixed parsing of coordinates with lowercase S/W directions

4.0.0 (2018-07-13)

Updated the minimum required PHP version from 5.5.9 to 7.1
Added scalar type hints
Added return type hints
Added nullable type hints
Made constant visibility explicit
Constructing an invalid LatLongValue now causes InvalidArgumentException instead of OutOfRangeException

3.0.0 (2018-03-20)

Removed DATAVALUES_GEO_VERSION constant
The parsers no longer extend StringValueParser
- They no longer have public methods setOptions and getOptions
- They no longer have protected field options
- They no longer have protected methods requireOption, defaultOption and stringParse
- GlobeCoordinateParser and LatLongParser no longer have protected method getOption
Made several protected fields and methods private
- All fields of LatLongValue
- The detect…Precision methods in GlobeCoordinateParser
- LatLongParser::getParsers
Removed public static method LatLongParser::areCoordinates
Dropped dependence on the DataValues Common library
Removed long deprecated class aliases
- DataValues\GlobeCoordinateValue (now in DataValues\Geo\Values)
- DataValues\LatLongValue (now in DataValues\Geo\Values)
- DataValues\Geo\Formatters\GeoCoordinateFormatter (now LatLongFormatter)
- DataValues\Geo\Parsers\GeoCoordinateParser (now LatLongParser)

2.1.1 (2017-08-09)

Allow use with ~0.4.0 of DataValues/Common

2.1.0 (2017-08-09)

Remove MediaWiki integration
Make use of the …::class feature
Add .gitattributes to exclude unnecessary files from git exports
Use Wikibase CodeSniffer instead of MediaWiki's
Move to short array syntax

2.0.1 (2017-06-26)

Fixed GlobeCoordinateValue::newFromArray and LatLongValue::newFromArray not accepting mixed values.
Deprecated GlobeCoordinateValue::newFromArray and LatLongValue::newFromArray.
Updated the minimum required PHP version from 5.3 to 5.5.9.

2.0.0 (2017-05-09)

GlobeCoordinateValue no longer accepts empty strings as globes.
GlobeCoordinateValue no longer accept precisions outside the [-360..+360] interval.
Changed hash calculation of GlobeCoordinateValue in an incompatible way.
Renamed GeoCoordinateFormatter to LatLongFormatter, leaving a deprecated alias.
Renamed GeoCoordinateParser to LatLongParser, leaving a deprecated alias.
Renamed GeoCoordinateParserBase to LatLongParserBase.
Deprecated LatLongParser::areCoordinates.

1.2.2 (2017-03-14)

Fixed multiple rounding issues in GeoCoordinateFormatter.

1.2.1 (2016-12-16)

Fixed another IEEE issue in GeoCoordinateFormatter.

1.2.0 (2016-11-11)

Added missing inline documentation to public methods and constants.
Added a basic PHPCS rule set, can be run with composer phpcs.

1.1.8 (2016-10-12)

Fixed an IEEE issue in GeoCoordinateFormatter
Fixed a PHP 7.1 compatibility issue in a test

1.1.7 (2016-05-25)

Made minor documentation improvements

1.1.6 (2016-04-02)

Added compatibility with DataValues Common 0.3.x

1.1.5 (2015-12-28)

The component can now be installed together with DataValues Interfaces 0.2.x

1.1.4 (2014-11-25)

Add a fallback to default on invalid precision to more places.

1.1.3 (2014-11-19)

Fall back to default on invalid precision instead of dividing by zero.

1.1.2 (2014-11-18)

Precision detection in GlobeCoordinateParser now has a lower bound of 0.00000001°

1.1.1 (2014-10-21)

Removed remaining uses of class aliases from messages and comments
Fixed some types in documentation

1.1.0 (2014-10-09)

Made the component installable with DataValues 1.x
GeoCoordinateFormatter now supports precision in degrees
GlobeCoordinateFormatter now passes the globe precision to the GeoCoordinateFormatter it uses
Introduced FORMAT_NAME class constants on ValueParsers to use them as expectedFormat
Changed ValueParsers to pass rawValue and expectedFormat arguments when constructing a ParseException

1.0.0 (2014-07-31)

All classes and interfaces have been moved into the DataValues\Geo namespace
- DataValues\LatLongValue has been left as deprecated alias
- DataValues\GlobeCoordinateValue has been left as deprecated alias
Globe in GlobeCoordinateValue now defaults to http://www.wikidata.org/entity/Q2

0.2.0 (2014-07-07)

Removed deprecated GeoCoordinateValue
Added GlobeMath

0.1.2 (2014-01-22)

Added support for different levels of spacing in GeoCoordinateFormatter

0.1.1 (2013-11-30)

Added support for direction notation to GeoCoordinateFormatter
Decreased complexity of GeoCoordinateFormatter
Decreased complexity and coupling of GeoCoordinateFormatterTest

0.1.0 (2013-11-17)

Initial release with these features:

LatLongValue
GlobeCoordinateValue
GeoCoordinateFormatter
GlobeCoordinateFormatter
DdCoordinateParser
DmCoordinateParser
DmsCoordinateParser
FloatCoordinateParser
GeoCoordinateParser
GlobeCoordinateParser

data-values / geo

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