In the phpmailer plugin, set up a redirect when submitting a form?

Question

PHP

Please tell me how to make it so that after a successful submission of the form there is a redirect to the thank you page in phpmailer, now the form works, letters arrive, but after sending it redirects to a page with the following text
{"message":"\u0414\u0430\u043d\u043d\u044b \u0435 \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u044b!"}
Here is the handler file code

<?php
  use PHPMailer\PHPMailer\PHPMailer;
  use PHPMailer\PHPMailer\Exception;

  require 'phpmailer/src/Exception.php';
  require 'phpmailer/src/PHPMailer.php';

  $mail = new PHPMailer(true);
  $mail->CharSet = 'UTF-8';
  $mail->setLanguage('ru', 'phpmailer/language/');
  $mail->IsHTML(true);

  //От кого письмо
  $mail->setFrom('[email protected]', 'Заказ потолков');
  //Кому отправить
  $mail->addAddress('[email protected]');
  //Тема письма
  $mail->Subject = 'Заказ обратного звонка';


  //Тело письма
  $body = '<h1>Заказ обратного звонка</h1>';
  
  if(trim(!empty($_POST['user_name']))){
    $body.='<p><strong>Имя:</strong> '.$_POST['user_name'].'</p>';
  }
  if(trim(!empty($_POST['user_phone']))){
    $body.='<p><strong>Телефон:</strong> '.$_POST['user_phone'].'</p>';
  }

  $mail->Body = $body;

  //Отправляем
  if (!$mail->send()) {
    $message = 'Ошибка';
  } else {
    $message = 'Данные отправлены!';
  }

  $response = ['message' => $message];

  header('location: thank-you.html');
  echo json_encode($response);
?>

I tried to delete something, to substitute something, nothing changes, mail comes, but this unnecessary page with text opens. Help me please.

Answer 1

You have a response output after the header with a redirect , so the redirect to the desired page does not work Do this, while deleting the last three lines in the code:header('location: thank-you.html')echo json_encode($response)

if (!$mail->send()) {
    $message = 'Ошибка';
    echo $message;
} else {
    header('location: thank-you.html');
}