What are the best practices for transitioning from using GET to POST requests in PHP forms to enhance security against CSRF attacks?

To enhance security against CSRF attacks, it is recommended to transition from using GET to POST requests in PHP forms. This helps prevent attackers from exploiting the form submission to perform unauthorized actions on behalf of the user. By using POST requests, sensitive data is not exposed in the URL, making it harder for attackers to manipulate.

<form action="process_form.php" method="post">
    <!-- form fields here -->
    <input type="submit" value="Submit">
</form>