apache伪静态转换成nginx，来个大佬帮忙看看

代码是下面这一段，怎么完美转成nginx的，试了很多在线转换工具都有问题

RewriteEngine On
Options +FollowSymLinks
Options -Indexes
RewriteCond %{SCRIPT_FILENAME} !-d  
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule . index.php [L,QSA]

RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC] RewriteRule ^(.*)$ http://%1/$1 [R=301,L]