dyaaj/polyline-encoder

Polyline Encoder / Decoder in PHP

Polyline Encoder

Polyline Encoder is a simple PHP class that will help you work with polyline encoding / decoding. For more details about the polyline encoder algorithm, please refer to : https://developers.google.com/maps/documentation/utilities/polylinealgorithm

License

This project is under MIT and GPLv2 Licenses.

Usage

Just insert the following line at the top of your PHP file :

#require_once 'PolylineEncoder.php';

Encode a polyline

To encode a polyline just follow those steps :

$polylineEncoder = new PolylineEncoder();

$polylineEncoder->addPoint(30.5,-120.2);
$polylineEncoder->addPoint(40.7,-120.95);
$polylineEncoder->addPoint(43.252,-126.453);

$encodedString = $polylineEncoder->encodedString();

Decode a polyline

$decodedPoints = PolylineEncoder::decodeValue("_p~iF~ps|U_ulLnnqC_mqNvxq`@");

Note

Please note that the encoding levels are currently not supported.

polyline-encoder's Issues

Typo fix

It should be PolylineEncoder::decodeValue instead of PolylineEncoder::decodeString in your "Decode a polyline" example

Kind regards.

Beware of double quoted strings in examples

Hi, in your examples you're using double quoted strings, but so, some chars in encoded string (that may be composed of any ASCII char) have different meaning and will lead to wrong decoding, for example the following string (attaching a txt file due to formatting issues in GitHub):
test.txt
is decoded with single quoted string syntax but is decoded differently with double quoted string syntax.