RewriteRule, optimization?

Question

Apache HTTP Server

There is a maximum long request:
www.site.com/admin/catalog/computers/page3/search/ [base64_encode_serialized_array]/filter_by_photo/sorted_by_id/
Request modifications can be different:
www.site.com/admin/catalog/computers/page3/filter_ ...
www.site.com/admin/catalog/computers/page3/sorted_...
etc.
All these URLs are processed by me now with one rule:
RewriteBase /
RewriteRule ^/?admin/catalog/([a-zA-Z]+)/(page([0-9]+)/?)?(search/([ a-zA-Z0-9]+)/?)?(filter_by_([a-zA-Z]+)/?)?(sorted_by_([a-zA-Z_]+)/?)?/?$ . /index.php?base=Catalog&dbname=$1&p=$3&search=$5&filter_by=$7&sort_by=$9 [L]
But now I feel that it is possible to optimize it, and I would like to take out the processing of spare parts separately, but I can’t find how to do it correctly, i.e. something like this:
RewriteBase /
RewriteRule ^/?admin/catalog/([a-zA-Z]+)/?$ ./index.php?base=Catalog&dbname=$1 [C]
RewriteRule ^/?page([ 0-9]+)/? &p=$1 [C]
RewriteRule ^/?search/([a-zA-Z0-9]+)/? &search=$1 [C]
RewriteRule ^/?filter_by_([a-zA-Z0-9]+)/? &filter_by=$1 [C]
RewriteRule ^/?sorted_by_([a-zA-Z0-9]+)/?
& sort_by =$1 [L] according to the algorithm, something like a search for a suitable beginning should turn out, and then we hang additions on it. Is it possible? And if so, how?

Answer 1

It might be worth taking out the logic for processing "spare parts" from Apache and giving it to a PHP script. Again, it will be easier in which case to go to another server.

Answer 2

I just have everything broken into parts by the first input parameter in the URL.