public function resetPasswordRequest($email)
{

  $db = $this -> db;

  if ($db -> checkUserExist($email))
  {

     $result =  $db -> passwordResetRequest($email);

     if(!$result){

     $response["result"] = "failure";
     $response["message"] = "Reset Password Failure";
     return json_encode($response);

  } else {

  $mail_result = $this -> sendEmail($result["email"],$result["temp_password"]);

  if($mail_result){

    $response["result"] = "success";
    $response["message"] = "Check your mail for reset password code.";  //line 159
    return json_encode($response);

  } else {

    $response["result"] = "failure";
    $response["message"] = "Reset Password Failure";
    return json_encode($response);
  }
}

public function sendEmail($email,$temp_password){

    $mail = $this -> mail;
    $mail->isSMTP();
    $mail->Host = 'smtp.gmail.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'email@gmail.com';
    $mail->Password = 'password';
    $mail->SMTPSecure = 'ssl';
    $mail->Port = 465;

    $mail->From = 'email';
    $mail->FromName = 'Siddhant Ghosh';
    $mail->FromName = 'Siddhant Ghosh';
    $mail->addAddress($email, 'Siddhant Ghosh');

    $mail->addReplyTo('email', 'Siddhant Ghosh');

    $mail->WordWrap = 50;
    $mail->isHTML(true);

    $mail->Subject = 'Password Reset Request';
    $mail->Body    = 'Hi,<br><br> Your password reset code is <b>'.$temp_password.';
    if(!$mail->send()) {
     return $mail->ErrorInfo;
    } else {
    return true;
    }
  }