如何使用PHP header()函数POST到页面？

<form action="process.php" method="post">
 <label for="name">Name:</label>
 <input type="text" id="name" name="name" required>
 <label for="email">Email:</label>
 <input type="email" id="email" name="email" required>
 <button type="submit">Submit</button>
</form>

<?php
  $name = $_POST['name'];
  $email = $_POST['email'];
?>

<?php
  $name = $_POST['name'];
  $email = $_POST['email'];

  header("Location: result.php?name=$name&email=$email");
  exit();
?>

<?php
  $name = $_GET['name'];
  $email = $_GET['email'];
?>

<p>Name: <?php echo $name; ?></p>
<p>Email: <?php echo $email; ?></p>