Redirect and change URL with Apache/htaccess

Question

I want to change/redirect URIs with http/https in this way:

from: http:// or https://xyz.lastdomain.com/b/custom/any-string/456?foo=bar

to: https://custom.nextdomain.com/b/any-string/456?foo=bar

the custom string should be in the new URL and everything from b so as the end of the URI should be appended.

I appreciate your help very much.

Answer 1

Could you please try following, considering that your htaccess file and custom folder are in root location.

RewriteEngine ON
RewriteCond %{REQUEST_URI} !custom [NC]
RewriteRule ^(.*)$ https://custom.nextdomain.com/custom/$1 [L]

Answer 2

You ma try this redirect rule from old site's .htaccess:

RewriteEngine On

RewriteCond %{HTTP_HOST} ^xyz\.lastdomain\.com$ [NC]
RewriteRule ^b/([\w-]+)/(.*)$ http://$1.nextdomain.com/b/$2 [L,NC,R=301,NE]

This assumes all the paths start with /b/ right after the domain name.