在laravel

Question

我想获取两列的值并同时循环其中两列并使用它来计算纬度和经度的距离，但问题是它为所有纬度进行循环以获得力学和循环所有力学的经度，但两者应合二为一。

            $mechanicsLatitude = DB::table("tranxav_mechanics")->get(['latitude','email']);
            $mechanicsLongitude = DB::table("tranxav_mechanics")->get(['longitude', 'email']);

              foreach ($mechanicsLatitude as $latitudeData){
                  foreach ($mechanicsLongitude as $longitudeData){
                       $theta = $driverLongitude - $longitudeData->longitude;
                      $dist = sin(deg2rad($driverLatitude)) * 
                              sin(deg2rad($latitudeData->latitude)) 
                          +  cos(deg2rad($driverLatitude)) 
                          * cos(deg2rad($latitudeData->latitude)) 
                          * cos(deg2rad($theta));
                        $dist = acos($dist);
                       $dist = rad2deg($dist);
                       $miles = $dist * 60 * 1.1515;
                      $unit = strtoupper("K");

                      if ($unit == "K") {
                        return $miles =  $miles * 1.609344;
                      } elseif ($unit == "N") {
                            $miles = $miles * 0.8684;
                      } else {
                            $miles;
                      }

                        TranxavTransaction::create([
                            'dEmail' => $request->get("email"),
                            'mEmail' => $longitudeData->email,
                            'car_model' => $model,
                            'how_it_happened' => $request->get("likelyProblem"),
                            'latitude' => $request->get("latitude"),
                            'longitude' => $request->get("longitude"),
                            'problem' => input::get('likelyProblem')
                        ]);
                    }
                 }

Answer 1

您可以使用索引进行简单的for循环，而不是使用foreach：

for ($i = 0; $i < $mechanicsLatitude->count(); $i++)
    $theta = $driverLongitude - $mechanicsLongitude[$i]->longitude;
    .
    .
    .

确保 $ mechanicsLatitude 和 $ mechanicsLongitude 具有相同的长度。