Sorry, I misexplained, and forgot about the important question you asked. There are already rewrite rules:
RewriteRule ^subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
This changes dynamic to static. In order to give distinct meta tags to each subcategories page, I had to make 20 copies, and add the category name and underscore before subcategories_and_featured_products.php, I then add to apply the rewrite rule to all twenty categories:
RewriteRule ^women_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /women_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^men_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /men_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^biker_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /biker_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^hiphop_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /hiphop_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^electronics_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /electronics_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^games_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /games_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^phones_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /phones_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^personal_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /personal_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^mobile_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /mobile_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^kids_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /kids_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^home_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /home_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^ethnic_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /ethnic_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^dvds_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /dvds_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^computers_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /computers_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^collectibles_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /collectibles_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^cameras_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /cameras_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^books_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /books_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^auto_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /auto_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^tv_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /tv_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
RewriteRule ^security_subcategories_and_featured_products-pid-([0-9]+)-cid-([0-9]+)\.php$ /security_subcategories_and_featured_products.php?pid=$1&cid=$2 [QSA,L]
The problem is, there is still
subcategories_and_featured_products.php, and
subcategories_and_featured_products.php?pid=68&cid=72 is the same as
women__subcategories_and_featured_products.php?pid=68&cid=72.
I need s
ubcategories_and_featured_products.php?pid=68&cid=$1 to redirect to
women_subcategories_and_featured_products.php?pid=68&cid=$2