[Help] Convert htaccess apache to nginx

[teen9xpro]

Someone can help me covert the code below to apache nginx


RewriteEngine On
RewriteRule ^([0-9]+)$ /showthread.php?t=$1 [NC,QSA,L]

RewriteRule ^((urllist|sitemap_).*\.(xml|txt)(\.gz)?)$
vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]

RewriteCond %{REQUEST_URI}
!(admincp/|modcp/|cron|vbseo_sitemap|api\.php)
RewriteRule ^((archive/)?(.*\.php(/.*)?))$ vbseo.php [L,QSA]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}
!/(admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^(.+)$ vbseo.php [L,QSA]


I know change [L] to Last but what is NC QSA.

Thanks for help!

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,224658,224658#msg-224658