jtejido/geodesy-php

PHP library for geodesy functions

, _(*1)

Geodesy-PHP

Geodesy-PHP is a port of some known geodesic/math functions for getting distance from a known point A to a known point B given their coordinates (good for working out distances between different latitude/longitude data provided by Google Geolocation or any RESTful APIs)., _(*2)

It also supports conversion between units of length, Polar position to Cartesian coordinates, and different Reference Datums., _(*3)

It provides distance calculations by:, _(*4)

Great-circle distance

1. Spherical Law of Cosines, _(*5)

2. Haversine Formula, _(*6)

Ellipsoid Geodesics

1. Vincenty's Formula, _(*7)

2. Hubeny's Formula, _(*8)

3. Thomas' Formula, _(*9)

4. Andoyer-Lambert Formula, _(*10)

5. Elliptic Distance, _(*11)

6. Forsythe-Andoyer-Lambert Formula, _(*12)

Unit Conversion

All operations are set in Metre. But it can also convert distance (and other transformation) values to:, _(*13)

1. Kilometre, _(*14)

2. Mile, _(*15)

3. Nautical Mile, _(*16)

4. Astronomical Unit, _(*17)

Position Conversion

It also allows coordinate/geographical conversions between the ff:, _(*18)

1. Polar to Cartesian, _(*19)

2. Cartesian to Polar, _(*20)

3. Polar to Web Mercator, _(*21)

4. Web Mercator to Polar, _(*22)

Transformation Options

Reference Datums are and will be, by default, set to WGS84. You can also transform one coordinate taken from a different source to another (see this for reference), as it also comes with pre-built datums (see the Datum namespace for options)., _(*23)

The following are the transformation options:, _(*24)

1. 3-Parameter Molodensky Transformation, _(*25)

2. 7-Parameter Helmert Transformation, _(*26)

3. 10-Parameter Molodensky-Badekas Transformation, _(*27)

Documentation

You can read about it here, _(*28)