What's wrong with this nginx conf?

I used one of tutorials here to install nginx and it works fine,but the problem when i add domains php no longer works,i getting download then.
Here is nginx.conf:

PHP:

#######################################################################
#
# This is the main Nginx configuration file.
#
# More information about the configuration options is available on
# * the English wiki - http://wiki.codemongers.com/Main
# * the Russian documentation - http://sysoev.ru/nginx/
#
#######################################################################

#----------------------------------------------------------------------
# Main Module - directives that cover basic functionality
#
# http://wiki.codemongers.com/NginxMainModule
#
#----------------------------------------------------------------------

user nginx;
worker_processes 5;

error_log /var/log/nginx/nginx-error.log crit;
#error_log /var/log/nginx/error.log notice;
#error_log /var/log/nginx/error.log info;

pid /var/run/nginx.pid;



#----------------------------------------------------------------------
# Events Module
#
# http://wiki.codemongers.com/NginxEventsModule
#
#----------------------------------------------------------------------

events {
worker_connections 2048;
}


#----------------------------------------------------------------------
# HTTP Core Module
#
# http://wiki.codemongers.com/NginxHttpCoreModule
#
#----------------------------------------------------------------------

http {
include /etc/nginx/mime.types;
default_type application/octet-stream;

log_format main '$remote_addr - $remote_user [$time_local] $request '
'"$status" $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';

access_log off;

sendfile on;
#tcp_nopush on;

#keepalive_timeout 0;
keepalive_timeout 65;

#gzip on;

# Load config files from the /etc/nginx/conf.d directory
include /etc/nginx/conf.d/*.conf;

#
# The default server
#
server {
listen 81;
server_name main.main.net;

#charset koi8-r;

#access_log logs/host.access.log main;

location / {
root /usr/share/nginx/html;
index index.html index.htm;
}

error_page 404 /404.html;
location = /404.html {
root /usr/share/nginx/html;
}

# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}

# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}
}



And here is virtual.conf:

PHP:



#
# A virtual host using mix of IP-, name-, and port-based configuration
#

#server {
# listen 8000;
# listen somename:8080;
# server_name somename alias another.alias;

# location / {
# root html;
# index index.html index.htm;
# }
#}

server {
listen 81;
listen domain.com:81;
server_name domain.com *.domain.com;

location / {
root /home/domain/public_html/;
index index.shtml index.html;
}
}



 

The PHP part is completely missing in the server{} part. Please take a look at the tutorial again.

 

I used this tutorial to use it:
http://howtoforge.com/installing-nginx-with-php5-and-mysql-support-on-fedora-10-p2
It seems nginx.conf content didnt fit entire into code,so let me post again without code block:
#######################################################################
#
# This is the main Nginx configuration file.
#
# More information about the configuration options is available on
# * the English wiki - http://wiki.codemongers.com/Main
# * the Russian documentation - http://sysoev.ru/nginx/
#
#######################################################################

#----------------------------------------------------------------------
# Main Module - directives that cover basic functionality
#
# http://wiki.codemongers.com/NginxMainModule
#
#----------------------------------------------------------------------

user nginx;
worker_processes 5;

error_log /var/log/nginx/nginx-error.log crit;
#error_log /var/log/nginx/error.log notice;
#error_log /var/log/nginx/error.log info;

pid /var/run/nginx.pid;



#----------------------------------------------------------------------
# Events Module
#
# http://wiki.codemongers.com/NginxEventsModule
#
#----------------------------------------------------------------------

events {
worker_connections 2048;
}


#----------------------------------------------------------------------
# HTTP Core Module
#
# http://wiki.codemongers.com/NginxHttpCoreModule
#
#----------------------------------------------------------------------

http {
include /etc/nginx/mime.types;
default_type application/octet-stream;

log_format main '$remote_addr - $remote_user [$time_local] $request '
'"$status" $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';

access_log off;

sendfile on;
#tcp_nopush on;

#keepalive_timeout 0;
keepalive_timeout 65;

#gzip on;

# Load config files from the /etc/nginx/conf.d directory
include /etc/nginx/conf.d/*.conf;

#
# The default server
#
server {
listen 81;
server_name host.host.net;

#charset koi8-r;

#access_log logs/host.access.log main;

location / {
root /usr/share/nginx/html;
index index.html index.htm;
}

error_page 404 /404.html;
location = /404.html {
root /usr/share/nginx/html;
}

# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}

# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}
}

 

This part must be uncommented and adjusted as shown in the tutorial.