Edited and packaged for Boiler by: Bluelight Studios will@bcslichfield.com
readme.txt
(c) 2005 Jonathan Stott
Created on 11-Aug-2005
2.3 - 24 Aug 2006
- Changed OSRef->toSixFigureString() so that the eastings and northings are rounded rather than floored.
2.2 - 11 Feb 2006
- Used different algorithm for calculating distance between latitudes and longitudes - fixes a number of problems with distance calculations
2.1 - 22 Dec 2005
- Added getOSRefFromSixFigureReference function
2.0 - 21 Dec 2005
- Completely different object design - conversion functions now through objects rather than static functions
- Updated comments and documentation
1.1 - 11 Sep 2005
- Added WGS84/OSGB36 conversions
1.0 - 11 Aug 2005
- Initial version
PHPcoord is a PHP script that provides functions for handling various co-ordinate systems and converting between them. Currently, OSGB (Ordnance Survey of Great Britain) grid references, UTM (Universal Transverse Mercator) references and latitude/longitude are supported. A function is also provided to find the surface distance between two points of latitude and longitude.
When using the OSGB conversions, the majority of applications use the WGS84 datum rather than the OSGB36 datum. Conversions between the two data were added in v1.1 - the conversions should be accurate to within 5m or so. If accuracy is not important (i.e. to within 200m or so), then it isn't necessary to perform the conversions.
Examples of how to use the functions provided in phpcoord.php can be found in the test.php script.
See http://www.jstott.me.uk/phpcoord/ for latest releases and information.
DISCLAIMER
Accuracy of the co-ordinate conversions contained within the PHPcoord package is not guaranteed. Use of the conversions is entirely at your own risk and I cannot be held responsible for any consequences of errors created by the conversions. I do not recommend using the package for mission-critical applications.
LICENSING
This software product is available under the GNU General Public License (GPL). Terms of the GPL can be read at http://www.jstott.me.uk/gpl/. Any commercial use requires the purchase of a license - contact me at phpcoord@jstott.me.uk for details.