What are the potential pitfalls of using PHPNuke for website development?

One potential pitfall of using PHPNuke for website development is its lack of security features, making it vulnerable to attacks such as SQL injection and cross-site scripting. To mitigate these risks, developers should regularly update PHPNuke to the latest version, use secure coding practices, and implement additional security measures such as input validation and output sanitization.

// Example of input validation using PHP filter functions
$username = filter_var($_POST['username'], FILTER_SANITIZE_STRING);
$password = filter_var($_POST['password'], FILTER_SANITIZE_STRING);

// Example of output sanitization using htmlspecialchars
echo htmlspecialchars($userInput, ENT_QUOTES, 'UTF-8');