WordPress provides a variety of ways to redirect logged-in users. In this DiW post, we explain each of these methods along with some useful tips and tricks along the way. These techniques enable you to redirect logged-in users to internal pages, external pages, and even return them to the current page.
Beginning with version 2.5, WordPress automatically handles many types of canonical redirects. A good example of this may be seen by typing your blog address into your browser both with and without the
www prefix. If you are using WordPress 2.5 or better, one of these versions of your blog URL will be immediately redirected to the other. The same type of automatic redirect may be seen for several other non-canonical URL variations, and is handled via PHP deep in the WordPress core.