What I am trying to do:

URL-X redirects to URL-Y.
These URL's are external sites that I do not own.

How can php be used to output something like "URL-X redirects to URL-Y".

Example for clarification:

1. redirect.com/redirect.php redirects to example.com/somepage.php.
2. When giving php the url redirect.com/redirect.php as input,
how can php output "redirect.com/redirect.php redirects to example.com/somepage.php".

Appreciate your answers