location ~ \.php$ {
    if (!-f $request_filename) {
        return 404;
    }

    # http://example.com/doku.php?id=wiki:welcome のようなURLを
    # http://example.com/wiki/welcome のようなURLにリダイレクト
    if ($request_uri ~ ^/doku.php\?id=(?<query>.+)$) {
        rewrite .* /$query?;
        rewrite ^([^:]+):([^:]+):([^:]+):([^:]+):([^:]+):([^:]+):([^:]+):([^:]+):(.+)$ $1/$2/$3/$4/$5/$6/$7/$8/$9;
        rewrite ^([^:]+):([^:]+):([^:]+):([^:]+):(.+)$                                 $1/$2/$3/$4/$5;
        rewrite ^([^:]+):([^:]+):(.+)$                                                 $1/$2/$3;
        rewrite ^([^:]+):(.+)$                                                         $1/$2;
        rewrite .*                                                                     $uri permanent;
    }

    include        fastcgi_params;
    fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
    fastcgi_param  HTTPS on;
    fastcgi_pass   127.0.0.1:9000;
    #fastcgi_pass   unix:/var/run/php-fpm/php-fpm.sock;
}