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I am looking for a PHP function that encodes an array of points into an encoded polyline.
The algorithm is described here:
http://code.google.com/apis/maps/documentation/utilities/polylinealgorithm.html
I can’t seem to find any way to do this and I have searched all over to no avail.
Have you seen this site:
http://facstaff.unca.edu/mcmcclur/GoogleMaps/EncodePolyline/
It has encoders written in Javascript, PHP, Java, Ruby and Perl.
UPDATE 2014-03-17
The above link is dead here is a new link for the PHP class http://perassi.org/quickhacks/polyline/class.polylineEncoder.phps