Может ли кто-нибудь решить мой PHP-код

---

Hey I Have an application.In which when user register before entering into application.The problem is i am using otp verification.But while making otp request sometimes otp doesn't comes and user fails to register into application and if user want to re-register he is not able to re-register as in database his details are saved and according to this code he is not able to re-request for otp.Here i am embedding my php code.Kindly help me in if otp verified then only data saved into my database.

<pre><?php

namespace App\Http\Controllers\Api;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Validator;
use Auth;
use App\User;
use App\Otp;
use App\Referal;
use App\Constant;

class registerController extends Controller
{
    public function apiRegister(Request $request)
    {
    	$this->Validate($request,[
            'name' => 'required|string',
            'mobile' => 'required|unique:users,mobile|min:10|max:10',
            'email' => 'required|email|unique:users,email',
            'password' => 'required|min:6',
            'refer_code' => 'nullable|exists:users,refer_code',
            'device_id' => 'required'
        ]);
        
        

        $device = User::where('device_id',$request->device_id)->first();

        if (!empty($device) && $device->otp_verified == 'n') {

            $apiToken = str_random(150);
            $otp = mt_rand(1000,9999);
            $msg = 'Your OTP is: '.$otp;
            $ot = sendSms($request->mobile,$msg);
            if($ot == true)
            {
                User::create([
                    'name' => $request->name,
                    'mobile' => $request->mobile,
                    'email' => $request->email,
                    'password' => bcrypt($request->password),
                    'api_token' => $apiToken,
                    'user_type' => 'u',
                    'points' => 0,
                    'refer_code' => refferCode(),
                    'otp' => $otp,
                    'ip_address' => \Request::getClientIp(true),
                    'device_id' => $request->device_id
                ]);

                $user_id = User::where('mobile',$request->mobile)->select('id','refer_code')->first();

                if(isset($request->refer_code)){    // if referal code is entered by user

                    $refer_user = User::where('refer_code',$request->refer_code)->first();

                    if(strtoupper($refer_user->refer_code) == strtoupper($request->refer_code))
                    {
                        $const = Constant::where('constant_name','referal_points')->first();

                        Referal::create([
                            'refer_from_id' => $refer_user->id,
                            'refer_to_id' => $user_id->id,
                            'referal_points' => $const->constant_value,
                            'time' => time()
                        ]);
                    }   
                    else
                    {
                        $response['msg'] = 'Referal Code is invalid!! try with another Referal code!!';
                        return response()->json($response,400);
                    }
                }

                Otp::create([
                    'user_id' => $user_id->id,
                    'time' => time(),
                ]);

                $response['msg'] = 'User Registered Successfully!';
                $response['refer_code'] = 'Your Referal Code :'. $user_id->refer_code;
                return response()->json($response,200);
            }
            else
            {
                $response['msg'] = 'User Registreation Unsuccessful!  Try again!!!';
                return response()->json($response,400);
            }
        }elseif(empty($device))
        {
            $apiToken = str_random(150);
            $otp = mt_rand(1000,9999);
            $msg = 'Your OTP is: '.$otp;
            $ot = sendSms($request->mobile,$msg);
            if($ot == true)
            {
                User::create([
                    'name' => $request->name,
                    'mobile' => $request->mobile,
                    'email' => $request->email,
                    'password' => bcrypt($request->password),
                    'api_token' => $apiToken,
                    'user_type' => 'u',
                    'points' => 0,
                    'refer_code' => refferCode(),
                    'otp' => $otp,
                    'ip_address' => \Request::getClientIp(true),
                    'device_id' => $request->device_id
                ]);

                $user_id = User::where('mobile',$request->mobile)->select('id','refer_code')->first();

                if(isset($request->refer_code)){    // if referal code is entered by user

                    $refer_user = User::where('refer_code',$request->refer_code)->first();
                    if($refer_user->refer_code == $request->refer_code)
                    {
                        $const = Constant::where('constant_name','referal_points')->first();
                        Referal::create([
                            'refer_from_id' => $refer_user->id,
                            'refer_to_id' => $user_id->id,
                            'referal_points' => $const->constant_value,
                            'time' => time(),
                        ]);
                    }   
                    else
                    {
                        $response['msg'] = 'Referal Code is invalid!! try with another Referal code!!';
                        return response()->json($response,400);
                    }
                }

                Otp::create([
                    'user_id' => $user_id->id,
                    'time' => time(),
                ]);

                $response['msg'] = 'User Registered Successfully!';
                $response['refer_code'] = 'Your Referal Code :'. $user_id->refer_code;
                return response()->json($response,200);
            }
            else
            {
                $response['msg'] = 'User Registreation Unsuccessful!  Try again!!!';
                return response()->json($response,400);
            }

        }
        else
        {
            $response['msg'] = 'This device has been used previously. Please try with another device!';
            return response()->json($response,400);
        }
        
    }
}

Что я уже пробовал:

Я попытался написать какой-то другой код, но не смог его написать

---