Simple php geohash class like python-geohash.
composer require lvht/geohash
You need PHP >= 5.4.0.
Encode a coordinate:
use Lvht\GeoHash;
echo GeoHash::encode(117.031689,36.65396);
The result is wwe0x0euu12.
The default precision is 0.00001 which can be changed by the third parameter of encode method.
Find the neighbors for a given geohash:
use Lvht\GeoHash;
var_dump(GeoHash::expand('wwe0x0'));
and the result is:
array(8) {
[0] =>
string(11) "wwe0wc7zzzz"
[1] =>
string(11) "wwe0x17zzzz"
[2] =>
string(11) "wwe0x37zzzz"
[3] =>
string(11) "wwe0wb7zzzz"
[4] =>
string(11) "wwe0x27zzzz"
[5] =>
string(11) "wwe0qz7zzzz"
[6] =>
string(11) "wwe0rp7zzzz"
[7] =>
string(11) "wwe0rr7zzzz"
}
Decode a geohash string:
Use Lvht\GeoHash;
var_dump(GeoHash::decode('wwe0x0'));
and the result is:
array(4) {
[0] =>
double(117.0263671875) # min longitude
[1] =>
double(117.03735351562) # max longitude
[2] =>
double(36.650390625) # min latitude
[3] =>
double(36.655883789062) # max latitude
}
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