Create Distance.php

Author: mouyong

src/Utils/Distance.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace ZhenMu\Support\Utils;
+
+class Distance
+{
+  public static function getDistanceSql($sqlLongitude, $sqlLatitude, $longitude, $latitude, $alias = 'distance')
+  {
+      $sql = <<<SQL
+  2 * ASIN(
+        SQRT(
+          POW(
+            SIN(
+              (
+                  $latitude * PI() / 180 - $sqlLatitude * PI() / 180
+              ) / 2
+            ), 2
+          ) + COS($latitude * PI() / 180) * COS($sqlLatitude * PI() / 180) * POW(
+            SIN(
+              (
+                  $longitude * PI() / 180 - $sqlLongitude * PI() / 180
+              ) / 2
+            ), 2
+          )
+        )
+      ) * 6378.137
+  SQL;
+      return sprintf('(%s) as %s', $sql, $alias);
+  }
+}