WordPress mu在nginx里的rewrite规则
1、域名泛解析；
2、nginx conf里rewrite规则
rewrite ^.*/files/(.*) /wp-content/blogs.php?file=$1;
rewrite ^/.*(/wp-content/themes/.*\.(html|jpg|jpeg|gif|png|ico|css|zip|tgz|gz|rar|bz2|doc|xls|exe|pdf|ppt|txt|tar|mid|midi|wav|bmp|rtf|js))$ $1 last;
if (!-e $request_filename) {
rewrite ^.+?(/wp-.*) $1 last;
rewrite ^.+?(/.*\.php)$ $1 last;
rewrite ^ /index.php last;
}