PHP Rewrite multiple parameters at once with /param1/param2

I'd like to know how to rewrite multiple paramaters into /param1/param2

Let's assume I have included a file called account.php with

http://myurl.com/index.php?p=account.

It works just fine and is rewritten to

http://myurl.com/account

but let's say I want to have multiple parameters in account.php like

http://myurl.com/index.php?p=account&settings

which should rewritten look like:

http://myurl.com/account/settings How would I do that ?

.htacces file:

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !^/(favicon\.ico|apple-touch-icon.*\.png)$ [NC]
RewriteRule (.+) index.php?p=$1 [QSA,L]
</IfModule>

PHP Code to include the files:

 $pages = array('products','about','impressum','home','support','solutions','mc','team','account');

 $p = 'home';
 if(isset($_GET['p'])) {
 $p = $_GET['p'];
 }
 if(in_array($p, $pages)){
 include 'includes/'.$p.'.php';
 }
 else {
  include 'includes/home.php';
 }

I work with this code in my website is does what you looking for

RewriteEngine on 
RewriteBase /

RewriteRule ^post/([^/]+)/([^/]+)$ single.php?post_type=$1&post_id=$2 [QSA]