初始化项目

2026-09-01 22:15:50 +08:00
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+# GeoHash
+
+Simple php geohash class like python-geohash.
+
+
+## Getting Started
+
+### Install
+
+  composer require lvht/geohash
+
+### System Requirements
+You need **PHP >= 5.4.0**.
+
+### Usage
+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
+    }