What best practices should be followed when incorporating external scripts, such as using frames to include scripts in PHPKit?

When incorporating external scripts, such as using frames to include scripts in PHPKit, it is important to follow best practices to ensure security and optimal performance. One common practice is to sanitize user input to prevent injection attacks. Additionally, it is recommended to use HTTPS to securely load external scripts and to regularly update and monitor the scripts for any vulnerabilities.

// Sanitize user input before incorporating external scripts
$user_input = $_POST['user_input'];
$clean_input = filter_var($user_input, FILTER_SANITIZE_STRING);

// Use HTTPS to securely load external scripts
<script src="https://example.com/external_script.js"></script>

// Regularly update and monitor external scripts for vulnerabilities
// Check for updates and security patches from the script provider