获取两个经纬度之间的距离

application/index/controller/ImageDepot.php

@@ -186,7 +186,8 @@ class ImageDepot extends Basic
     public function ceshi()
     {
         $s = new PositionService();
-        $res =  $s->getPositionDistance('31.067059,121.518854','31.079655,121.51713');
+        // $res =  $s->getPositionDistance('31.067059,121.518854','31.079655,121.51713');
+        $res =  $s->getPositionDistance('31.1726200469,121.4651113645','31.1710885091,121.4639033433');
         dump($res);
     }
 

application/index/service/PositionService.php

@@ -27,7 +27,8 @@ class PositionService
         }
 
         $ak = 'eqkGg4WQehHn4k7ssWZTv8RPvydUm35s';
-        $url ="http://api.map.baidu.com/direction/v2/transit?origin={$first_position}&destination={$end_position}&ak={$ak}";
+        // $url ="http://api.map.baidu.com/direction/v2/transit?origin={$first_position}&destination={$end_position}&ak={$ak}";
+        $url ="http://api.map.baidu.com/directionlite/v1/walking?origin={$first_position}&destination={$end_position}&ak={$ak}";
         $data = file_get_contents($url);
         $data = str_replace('renderOption&&renderOption(', '', $data);
         $data = str_replace(')', '', $data);