Direct via . htaccess a query string

Question

I have a system where there will be multiple users. Each user will have his own subdomain. Ex.:

usuario1.sistema.com.br 
usuario2.sistema.com.br

For this I created the subdirectories and in each of them I created one .htaccess redirecting to the system in the root folder. See:

RewriteEngine on
RewriteCond %{HTTP_HOST} ^cliente1.sistema.com.br$ [OR]
RewriteCond %{HTTP_HOST} ^www.cliente1.sistema.com.br$
RewriteRule ^(.*)$ http://www.sistema.com.br/acesso/$1 [P]

The problem is that when it creates this redirect to the system, I cannot identify who the client is, ie if it is the cliente1 or cliente2, etc..

How could I identify this customer? I don’t have much experience with .htaccess, but I believe I could use RewriteCond %{QUERY_STRING} and in the system file take the PHP with $_REQUEST. Something like:

RewriteCond %{QUERY_STRING}^cliente=cliente1

And in PHP:

$cliente = $_REQUEST["cliente"];

If that’s the solution, how would I apply the RewriteCond %{QUERY_STRING} in my .htaccess?

Answer 1

I set up that rule:

RewriteEngine on
RewriteRule ^cliente([0-9]+).sistema.com.br$ http://www.sistema.com.br/acesso/$1 [P]

I added ([0-9]+) any number from 0 to 9 can be one or more characters, then put at the end of access in the redirect. The test is below in the image.

You can use this tool and improve to taste : https://htaccess.madewithlove.be/

Updating:

In that case Rei would just have to adapt the rule like this :

RewriteEngine on
RewriteRule ^([a-z0-9-]+).sistema.com.br$ http://www.sistema.com.br/acesso/$1 [P]

Or as you said in the question you wanted to ask a GET per client in php could be:

RewriteEngine on
RewriteRule ^([a-z0-9-]+).sistema.com.br$ http://www.sistema.com.br/acesso?cliente=$1 [P]

Any set of characters from a to z lower or zero to nine may contain dashes, and the + outside the brackets means one or more characters.

I hope this helps you!