I wish to redirect m.example.com to example.com/index.php?type=mobile while getting the guidelines I have already written for example.com...

So, say, I've N rules already defined searching something similar to:

^view/([A-z]+) index.php?view=$1
^delete/([A-z]+) index.php?delete=$1
^page/view/([A-z]+)/([0-9]+) index.php?view=$1&page=$2
^page/delete/([A-z]+)/([0-9]+) index.php?delete=$1&page=$2

Without needing to rewrite all of individuals for that m.example.com subdomain, it is possible to method for m.example.com to inherit exactly the same rules, however with the subdomain flag type=mobile? Essentially, without needing to add N more lines to have an .htaccess situated within the m subdomain folder:

^view/([A-z]+) index.php?view=$1&type=mobile
^delete/([A-z]+) index.php?delete=$1&type=mobile
^page/view/([A-z]+)/([0-9]+) index.php?view=$1&page=$2&type=mobile
^page/delete/([A-z]+)/([0-9]+) index.php?delete=$1&page=$2&type=mobile

You can simply look into the HTTP_HOST in your PHP script:

$mobile = isset($_SERVER['HTTP_HOST']) && strtolower($_SERVER['HTTP_HOST']) === 'm.example.com';

So try new things:

RewriteCond %{HTTP_HOST} ^([^.]+)\.example.com [NC]
RewriteRule ^view/([A-z]+) index.php?view=$1&type=%1

Is the fact that what looking for ?