How can the user ensure that the source code from the FCK-Editor is correctly captured and saved in the news file using PHP?

To ensure that the source code from the FCK-Editor is correctly captured and saved in the news file using PHP, the user can use the htmlspecialchars() function to encode special characters before saving the content to the file. This will prevent any HTML or JavaScript code from being executed when the news file is displayed on the website.

<?php
// Get the content from the FCK-Editor
$content = $_POST['editor_content'];

// Encode special characters
$encoded_content = htmlspecialchars($content);

// Save the encoded content to the news file
file_put_contents('news.txt', $encoded_content);
?>