Laravel Accessing variable of other function - php

Question

I have a sendOtp() method using which i have to send otp to the user for changing password in changePassword() method
i want to return the $otp from the sendOtp() to changePassword()
The sendOtp method
public function sendOtp($user_phone_number)
{
$otp = mt_rand(100000, 999999);
//sms login
$data = [
'data' => [
'otp' => $otp
]
];
return Response::json(
$data_with_status = array_merge($this->respondSuccess('otp sent'), $data)
);
}
The changePassword() method
public function changePasswordOtp($user_phone_number)
{
$user = User::where('phone_number', '=', $user_phone_number)->count();
if($user > 0) {
$this->sendOtp($user_phone_number);
//return response with sent otp
}
else {
return Response::json(
$this->respondFailure('User not found')
);
}
}
thank you

Answer 1

You can receive otp by following code:
public function changePasswordOtp($user_phone_number)
{
$user = User::where('phone_number', '=', $user_phone_number)->count();
if($user > 0) {
$result_otp = $this->sendOtp($user_phone_number);
$result_otp = json_decode($result_otp ,true);
$otp = $result_otp['data']['otp']; //return response with sent otp
}
else {
return Response::json(
$this->respondFailure('User not found')
);
}
}

Answer 2

Change your sendOtp like this :
public function sendOtp($user_phone_number)
{
$otp = mt_rand(100000, 999999);
//sms login
$data = [
'data' => [
'otp' => $otp
]
];
$responseMessage= $this->respondSuccess();
$responseArray = array_merge(responseMessage, data);
return Response::json($responseArray);
);
}