How can Joomla be configured to properly handle form submissions from external PHP scripts?

To properly handle form submissions from external PHP scripts in Joomla, you can create a custom component or module that processes the form data. This component or module should validate the input data, execute the necessary actions, and provide feedback to the user. You can then include this component or module in your Joomla website to handle form submissions securely.

<?php
defined('_JEXEC') or die;

$input = JFactory::getApplication()->input;
$formData = $input->get('formData', [], 'array');

// Process form data
// Validate input data
// Execute necessary actions

// Provide feedback to the user
echo "Form submission successful!";