Forum Moderators: phranque
RewriteEngine On
RewriteRule ^/?([^/][^\./]*)[:;,\.]*$ index.php?c=$1&%{QUERY_STRING} [L]
# Internally rewrite requests for /index.php?c=<value1>&a=<value2>
# or /?c=<value1>&a=<value2> to /<value1>/index.php?<value2>
RewriteCond %{QUERY_STRING} ^c=([^&]+)&a=([^&]+)$
RewriteRule ^(index\.php)?$ /%1/index.php?%2 [L]