Nginx文件名Case Case不敏感

Question

我希望我的php文件不区分大小写。
我试过了：

location ~* / {
        rewrite ^/(.+)$ /index.php?url=$1 last;
}
location ~* \.php$ {
                try_files $uri =404;
                #fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_pass 127.0.0.1:9000;
                fastcgi_index index.php;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                include fastcgi_params;
        fastcgi_read_timeout 300;

    }

我得到500内部服务器。错误在哪里？提前致谢