For my PHP London nginx & fpm demo - here are three examples for setup, the first of which was shown during the event.

Build LEMP pt.1 nginx & php-fpm

# add the REMI repo
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm

# in /etc/yum.repos.d/nginx.repo add the following lines
[nginx]
name=nginx repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=0
enabled=1

# install it
yum --enablerepo=remi,remi-test install nginx php-fpm php-common

# install your modules for php
yum --enablerepo=remi,remi-test install php-pecl-apc php-cli php-pear php-pdo php-mysqlnd php-pgsql php-pecl-mongo php-sqlite php-pecl-memcache php-pecl-memcached php-gd php-mbstring php-mcrypt php-xml

# create the php session directory
mkdir -p /var/lib/php/session
chown -R apache:apache /var/lib/php/session

# start services
service nginx start
service php-fpm start

# declare and register services for start on system boot
chkconfig --add nginx
chkconfig --levels 235 nginx on
chkconfig --add php-fpm
chkconfig --levels 235 php-fpm on


# and make a test site with logs like this:
mkdir -p /srv/www/phpdemo.london/public_html
mkdir -p /var/log/nginx/phpdemo.london
chown -R apache:apache /srv/www/phpdemo.london
chown -R nginx:nginx /var/log/nginx

mkdir /etc/nginx/sites-available
mkdir /etc/nginx/sites-enabled

# add these lines to /etc/nginx/nginx.conf within the http{} block
## Load virtual host conf files. ##
include /etc/nginx/sites-enabled/*;

# create the nginx config for our testsite
vi /etc/nginx/sites-available/phpdemo.london

# paste the following lines to the new config file
server {
    server_name phpdemo.london;
    access_log /var/log/nginx/phpdemo.london/access.log;
    error_log /var/log/nginx/phpdemo.london/error.log;
    root /srv/www/phpdemo.london/public_html;
 
    location / {
        index index.html index.htm index.php;
    }
 
    location ~ \.php$ {
        include /etc/nginx/fastcgi_params;
        fastcgi_pass  127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME /srv/www/phpdemo.london/public_html$fastcgi_script_name;
    }
}

# make the site 'enabled'
cd /etc/nginx/sites-enabled/
ln -s /etc/nginx/sites-available/phpdemo.london

# restart nginx
service nginx restart

# And open port 80 in your firewall 
vi /etc/sysconfig/iptables

# Add this line immediately after your other tcp line(s) and before any other line
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT

# restart the firewall
service iptables restart


# make a phpinfo() demo page
cd /srv/www/phpdemo.london/public_html
vi index.php
<?php 
    phpinfo();
?>

# go check it out! set dns in your hosts file if needed and..
http://phpdemo.london

Build LEMP pt.2 mysql & phpMyAdmin

# once part 1 is completed...

# install it
yum --enablerepo=remi,remi-test install mysql mysql-server
yum --enablerepo=remi,remi-test install phpmyadmin

# declare and register mysql service for start on system boot
chkconfig --add mysqld
chkconfig --levels 235 mysqld on

# start it
service mysqld start 

# Follow instructions to set root password and remove temporary accounts
# !! important !! make your MySQL safe and secure before using in production
# !! important !! unsafe quick setup is very much NOT SAFE FOR PRODUCTION !!
mysql
CREATE USER 'demo'@'localhost' IDENTIFIED BY 'user';


# create the nginx config for our phpMyAdmin site
vi /etc/nginx/sites-available/phpmyadmin.phpdemo.london

# paste the following lines to the new config file
server {
       listen   80;
       server_name phpmyadmin.phpdemo.london;
       access_log /var/log/nginx/phpmyadmin/access.log;
       error_log /var/log/nginx/phpmyadmin/error.log;
       root /usr/share/phpMyAdmin;

       location / {
           index  index.php;
       }

       ## Images and static content is treated different
       location ~* ^.+.(jpg|jpeg|gif|css|png|js|ico|xml)$ {
           access_log        off;
           expires           360d;
       }

       location ~ /\.ht {
           deny  all;
       }

       location ~ /(libraries|setup/frames|setup/libs) {
           deny all;
           return 404;
       }

       location ~ \.php$ {
           include /etc/nginx/fastcgi_params;
           fastcgi_pass 127.0.0.1:9000;
           fastcgi_index index.php;
           fastcgi_param SCRIPT_FILENAME /usr/share/phpMyAdmin$fastcgi_script_name;
       }
}

# and make a logs directory
mkdir -p /var/log/nginx/phpmyadmin

# make the site 'enabled'
cd /etc/nginx/sites-enabled
ln -s /etc/nginx/sites-available/phpmyadmin.phpdemo.london

# restart nginx
service nginx restart

# go check it out! set dns in your hosts file if needed and..
http://phpmyadmin.phpdemo.london

Build LEMP pt.3 auth_basic HTTP Security in nginx

# once part 1 is completed...

# create a compatible crypt password for 'mysecret'
openssl passwd mysecret

# create a file to hold our new credentials
vi /etc/nginx/conf.d/admin_authpasswd

# for auth_basic creadentials should be stored 'user:pwd' each new user on a seperate line
# copy, paste and modify the following into the new credentials file
authadmin:WcWL2aiW3FZlU

# create the nginx config file for the site you wish to secure
vi /etc/nginx/sites-available/phpmyadmin.phpdemo.london

# identify the location(s) to secure with a location block and include the two 'auth_basic' lines as below
# with the path to your credentials file
    location / {
  	index  index.php;
		auth_basic "authadmin demo : http_auth security";
		auth_basic_user_file /etc/nginx/conf.d/admin_authpasswd;
    }

** for phpmyadmin on 5.5 systems use
:> yum --enablerepo=remi,remi-php55 install phpmyadmin