How can PHP be used to automatically submit a form after editing a text field without the need to click a button?

When editing a text field in a form, you can use JavaScript to automatically submit the form without the need for the user to click a button. This can be achieved by adding an event listener to the text field that triggers the form submission whenever the text field is edited.

<?php
// PHP code to handle form submission
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  // Process the form data
  
  // Redirect to another page after processing the form
  header("Location: another_page.php");
  exit();
}
?>

<form id="myForm" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
  <input type="text" name="myTextField" id="myTextField">
</form>

<script>
document.getElementById("myTextField").addEventListener("input", function() {
  document.getElementById("myForm").submit();
});
</script>