Geohash is a php module that provides below functions.
- Encoding geographic location into short string of letters and digits.
- Decoding string of letters and digits to latitude and longitude.
- Identifying the neighbouring geohashes of a provided geohash.
The easiest way to install PHP Geohash is with composer. Find it on Packagist.
$ composer require saikiran/geohash
Encode co-ordinates
use Sk\Geohash\Geohash;
$g = new Geohash();
echo $g->encode(17.38000000, 78.42000000, 5);
The result is
tepfb
Decode geohash into geographical coordinates
use Sk\Geohash\Geohash;
$g = new Geohash();
$coordinates = $g->decode("tepfb", 5);
echo "latitude : " . $coordinates[0] . ", longitude : " . $coordinates[1];
The result is
latitude : 17.38, longitude : 78.42
Get geohashes of 8 neighbors of a geohash
use Sk\Geohash\Geohash;
$g = new Geohash();
$hash = $g->encode(25.813646, -80.133761, 7);
$neighbors = $g->getNeighbors($hash);
echo "Hash: $hash\n";
echo "Neighbors: " . json_encode($neighbors) . "\n";
The result is
Hash:
Neighbors: {"North":"dhx4be2","East":"dhx4be1","South":"dhx4bdb","West":"dhx4b7p","NorthEast":"dhx4be3","SouthEast":"dhx4bdc","SouthWest":"dhx4b6z","NorthWest":"dhx4b7r"}
Go to this directory from your project folder
$ cd vendor/saikiran/geohash
Then run these two commands
$ composer install
$ vendor/bin/phpunit tests
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