Install PHP-FPM 5.4 in Ubuntu 12.04.4 + Nginx

For the startup i'm following https://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-12-04 tutorial to installing LEMP (Linux, nginx, MySQL, PHP) in my VPS. The server Run perfectly. But then for my project i used Laravel 4.2 which required PHP 5.4 for minimal requirement. So then i upgrade the PHP by following http://www.dev-metal.com/how-to-install-latest-php-5-4-x-on-ubuntu-12-04-lts-precise-pangolin/:

sudo apt-get update
sudo apt-get install python-software-properties
sudo add-apt-repository ppa:ondrej/php5-oldstable
sudo apt-get update
sudo apt-get install php5-fpm

After that when i try to view page that contain php code, the server going error.
I view Nginx error from "/var/log/nginx/error.log"

2014/06/10 06:37:18 [crit] 481#0: *1 connect() to unix:/var/run/php5-fpm.sock:", host: "yourdomain.com"

Then found some solution from http://www.queryadmin.com/921/connect-unix-var-run-php5-fpm-sock-failed/:
Edit the pool file "/etc/php5/fpm/pool.d/www.conf" and change:

listen = /var/run/php5-fpm.sock

to this:

listen = 127.0.0.1:9000

Edit the Nginx vHost file "/etc/nginx/sites-available/default" and change:

location ~ \.php$
{
    ...
    fastcgi_pass unix:/var/run/php5-fpm.sock;
    ...
}

to this:

location ~ \.php$
{
    ...
    fastcgi_pass 127.0.0.1:9000;
    ...
}

** If you wrote the fastcgi_pass on /etc/nginx/fastcgi_params file, edit it too.

Restart PHP5-FPM service:

/etc/init.d/php5-fpm restart

Restart Nginx service:

/etc/init.d/nginx restart

That's it, you may solved the issue now. Have Fun.