What are the potential pitfalls of using nested forms in PHP and how can they be avoided for smoother functionality?

Potential pitfalls of using nested forms in PHP include confusion with form submission, difficulty in handling multiple form inputs, and potential conflicts with form validation. To avoid these issues, it is recommended to structure the forms in a way that they do not overlap or nest within each other. Each form should be independent and clearly defined to ensure smoother functionality.

<form action="process_form1.php" method="post">
    <!-- Form 1 inputs here -->
</form>

<form action="process_form2.php" method="post">
    <!-- Form 2 inputs here -->
</form>