重写:Apache到Nginx

重写:Apache到Nginx,apache,.htaccess,nginx,rewrite,Apache,.htaccess,Nginx,Rewrite,有人能告诉我,如何为nginx转换以下规则吗 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]

有人能告诉我,如何为nginx转换以下规则吗

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]