What are the differences between using a redirect via headers and a DynDNS service for URL forwarding in PHP?

Using a redirect via headers in PHP involves sending an HTTP header to the browser to redirect to a new URL. This method is simple and efficient but requires the server to handle the redirection. On the other hand, using a DynDNS service for URL forwarding involves setting up a DNS record that points to the desired URL. This method is more flexible and can be managed externally, but it may involve additional costs and setup.

// Redirect via headers
header("Location: https://www.newurl.com");
exit;

// Using DynDNS service for URL forwarding
// Set up a DNS record to point to the desired URL