mod_rewrite rewrite url using .htaccess php


New Member
I am new to htaccess rules.I want a rule that will treat two urls as one.This two should be treated as same URL. I just want to add sites/client1 to URL which actually does nothing. Every URL request should contain sites/client1/.For next request like
  • multisite2/index.php?id_product=1&controller=product
  • multisite2/sites/client1/index.php?id_product=1&controller=product
Thanks for any help.