What are some alternative methods to unset() for clearing form data after submission in PHP?

After submitting a form in PHP, you may want to clear the form data to prevent resubmission. One alternative method to using unset() is to redirect the user back to the form page after processing the form data. This will reload the page and clear the form data. Another method is to use JavaScript to reset the form fields after submission. 

// Redirect back to the form page after processing form data
header("Location: form.php");
exit;

// Using JavaScript to reset form fields after submission
echo '<script>document.getElementById("myForm").reset();</script>';

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