update

app/Http/Controllers/Mobile/OtherController.php

@@ -140,23 +140,24 @@ class OtherController extends CommonController
         $sortName = $all['sort_name'] ?? 'distance';
         $sortType = $all['sort_type'] ?? 'asc';
 
-        // 使用 Haversine 公式计算距离，确保经纬度数据有效
+        // 使用更稳定的距离计算公式，避免 acos 的精度问题
         $distanceFormula = "
-            (6371 * acos(
-                cos(radians(?)) *
-                cos(radians(CAST(company_latitude AS DECIMAL(10,8)))) *
-                cos(radians(CAST(company_longitude AS DECIMAL(10,8))) - radians(?)) +
-                sin(radians(?)) *
-                sin(radians(CAST(company_latitude AS DECIMAL(10,8))))
+            (6371 * 2 * asin(
+                sqrt(
+                    pow(sin(radians((CAST(company_latitude AS DECIMAL(10,8)) - ?) / 2)), 2) +
+                    cos(radians(?)) * cos(radians(CAST(company_latitude AS DECIMAL(10,8)))) *
+                    pow(sin(radians((CAST(company_longitude AS DECIMAL(10,8)) - ?) / 2)), 2)
+                )
             )) AS distance
         ";
 
         $query = Company::with('users')->select('*')
+            ->selectRaw($distanceFormula, [$latitude, $latitude, $longitude])
             ->where(function ($query) use ($all) {
                 if (isset($all['company_name'])) {
                     $query->where('company_name', 'like', '%' . $all['company_name'] . '%');
                 }
-            })->selectRaw($distanceFormula, [$latitude, $longitude, $latitude])
+            })
             ->whereNotNull('company_longitude')
             ->whereNotNull('company_latitude')
             ->where('company_longitude', '!=', '')