apache - 重写：Apache 到 Nginx

Question

有人可以告诉我，如何为 nginx 转换以下规则？

RewriteRule ^([^/]*)/?$ index.php?a=$1 [L,NC]
RewriteRule ^([^/]*)/([^/]*)/?$ index.php?a=$1&b=$2 [L,NC]
RewriteRule ^([^/]*)/([^/]*)/([^/]*)/?$ index.php?a=$1&b=$2&c=$3 [L,NC]

Answer 1

http://wiki.nginx.org/HttpRewriteModule#rewrite