wordpress multisite htaccess redirect site to TWO subsites

Question

EDITED: I've split a website into two subsites in a multisite enviroment.

The old site was moved to a subsite, and renamed old.mysite.example. This will be faced out at some point.

During development I had a redirect sending all visitors to the old.mysite.example subsite. Now that the work is done I need a very spesific redirect.

I want users that type in old.mysite.example sent back to www.mysite.example Where as I want users clicking on postlinks such as old.mysite.example/an-article-here sent to new.mysite.example/an-article-here.

Now redirect that removed the first mentioned redirect is working. But not the other. Anyone got a good way to do this ?

Answer 1

NB: Any redirects that you add to .htaccess need to go before the WordPress front-controller.

I want users that type in old.mysite.example sent back to www.mysite.example

RewriteCond %{HTTP_HOST} ^old\.mysite\.example [NC]
RewriteRule ^$ https://www.mysite.example/ [R=302,L]

The regex ^$ matches an empty URL-path, ie. a request for the document root only.

Where as I want users clicking on postlinks such as old.mysite.example/an-article-here sent to new.mysite.example/an-article-here

This is assuming you have already updated all the internal links on your own site and this is just for the benefit of any external 3rd parties (or search engines) that have linked to old.mysite.example/an-article-here.

Following the above redirect:

RewriteCond %{HTTP_HOST} ^old\.mysite\.example [NC]
RewriteRule (.+) https://new.mysite.example/$1 [R=302,L]

The regex .+ ensures it matches something and not nothing, so as not to conflict with requests for the document root that redirect elsewhere. Although with the directives in this order, it shouldn't really matter.

Change the 302 (temporary) redirect to 301 (permanent) only once you have confirmed the redirects are working OK. This is to avoid erroneous redirects being cached by the browser.

Clear your browser cache before testing.