How to hide directory name from URL using .htaccess - php

Question

Here is my site url structure as follows: http://www.sitename.com/new/about-us .
What I really want to do now is hide the directory name 'new' from the above url, but the admin url should remain unchanged.
The admin url would be like : http://www.sitename.com/new/admin .
My previous .htaccess code as follows:
RewriteEngine On
RewriteBase /new/
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/new/$1 [R=301,L]
RewriteRule blog/ - [L]
RewriteRule (^wlp) - [L]
RewriteRule admin/ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %(REQUEST_FILENAME} !-d
RewriteRule ^([\S\s/+.]+)/?$ index.php?url=$1 [QSA,L]
Here is my server directory structure:
/public
/new
.htaccess
index.php
about-us.php
/blog
/admin
Any help in this regard will be highly appreciated.

Answer 1

It sounds like what you are trying to accomplish is a common technique which I've seen before for forwarding all public_html requests to public_html/public to essentially hide the contents of the public_html directory from the user and making public_html/public the new web root.
Try using this in your public_html/.htaccess file (you can write further htaccess in public_html/new/.htaccess):
RewriteEngine on
RewriteBase /
#enforce www subdomain
RewriteCond %{HTTP_HOST} !^$
RewriteCond %{HTTP_HOST} ^sitename.com [NC]
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
#forward all requests, except new/admin, to the 'new' directory without the user's awareness
RewriteRule new/admin - [S=2]
RewriteRule ^$ new/ [L]
RewriteRule (.*) new/$1 [L]

Answer 2

This .htaccess in / should do:
RewriteEngine on
RewriteCond %{REQUEST_URI} !^new/
RewriteRule ^(.*)$ new/$1 [L]