What are the implications of allowing renaming of web addresses over HTTP?

Allowing renaming of web addresses over HTTP can lead to confusion for users and potential security risks. It can make it difficult to track and manage URLs, leading to broken links and outdated information. To mitigate these issues, it is important to carefully consider the implications of allowing renaming and implement proper redirects or aliases to ensure a seamless user experience.

// Redirect old URLs to new URLs using PHP
if ($_SERVER['REQUEST_URI'] == '/old-url') {
    header('HTTP/1.1 301 Moved Permanently');
    header('Location: /new-url');
    exit();
}