apache 2.2 - Multiple php versions simultaneously on Ubuntu

I want to be able to run multiple php versions on my development box running Ubuntu 12.04. What I want to accomplish is that when I use localhost as domain a default is used (let's say php 5.3.17). When I use 547.localhost as domain php 5.4.7 is used. I've seen some tutorials to get this working using fastcgi but until now I haven't been able to get it to work.
I've looked at these tutorials:

1. http://dbforch.wordpress.com/2010/05/21/apache2-fastcgi-multiple-php-versions-ubuntulucid-10-04/


2. http://www.metod.si/multiple-php-versions-with-apache-2-fastcgi-phpfarm-on-ubuntu/

For as far as I can see I have done everything that is needed. The problem is that php simply doesn't run. When I go to http://localhost/somephpfile.php it just outputs the source of the php file. The same for http://547.localhost/somephpfile.php.

I'll break down what steps I took in the hope that someone is able to spot what I missed.

1. First I installed a default lamp stack using sudo apt-get install lamp-server^ phpmyadmin. After this I had a working development server running the repository version of php.


2. Then I used phpfarm to create two php installs, one for 5.3.17 and one for 5.4.7. The localion of phpfarm is /etc/php/phpfarm, so the executables are in /etc/php/phpfarm/inst/php-{version}/bin


3. Then I enable suaxec and fastcgi for apache and disabe mod_php with sudo a2enmod fastcgi actions suexec && sudo a2dismod php5



4. Next, I edited /etc/apache2/mods-enabled/fastcgi.conf to read:

   
   
   

      
       FastCgiIpcDir /var/lib/apache2/fastcgi  
   
       FastCgiWrapper /usr/lib/apache2/suexec   FastCgiConfig -idle-timeout
       110 -killInterval 120 -pass-header HTTP_AUTHORIZATION -autoUpdate  
       ScriptAlias /php-fcgi/ /var/www/cgi-bin/ 
   
   




5. Then in /var/www/ I created a folder cgi-bin and in this folder two files, for each of the two php versions as follows (I show only the one for 5.3.17 /var/www/php5317.fcgi):

   
   
   

   #!/bin/sh
   # you can change the PHP version here.
   version="5.3.17"
   
   # php.ini file location, */php-5.2.13/lib equals */php-5.2.13/lib/php.ini.
   PHPRC=/etc/php/phpfarm/inst/php-${version}/lib/php.ini
   export PHPRC
   
   PHP_FCGI_CHILDREN=3
   export PHP_FCGI_CHILDREN
   
   PHP_FCGI_MAX_REQUESTS=5000
   export PHP_FCGI_MAX_REQUESTS
   
   
   # which php-cgi binary to execute
   exec /etc/php/phpfarm/inst/php-${version}/bin/php-cgi
   




6. The last step was to create virtual hosts. In the end I have three files in /etc/apache2/sites-enabled: 000-default, php5.3.17 and php5.4.7 With the following contents:

   
   
   

   default:

   
   
   

   
     ServerName localhost
     DocumentRoot /var/www
   
     
       Options Indexes FollowSymLinks MultiViews
       AllowOverride All
       Order allow,deny
       allow from all
       AddHandler php-cgi .php
       Action php-cgi /php-fcgi/php5317.fcgi
     
   
   

   
   
   
   

   php5.3.17:

   
   
   

   
     ServerName 5317.localhost
     DocumentRoot /var/www
     
       Options Indexes FollowSymLinks MultiViews
       AllowOverride All
       Order allow,deny
   
       allow from all
       AddHandler php-cgi .php
       Action php-cgi /php-fcgi/php5317.fcgi
     
   
   

   
   
   

   php5.4.7:

   
   
   

   
   
     ServerName 547.localhost
     DocumentRoot /var/www
     
       Options Indexes FollowSymLinks MultiViews
       AllowOverride All
       Order allow,deny
       allow from all
       AddHandler php-cgi .php
       Action php-cgi /php-fcgi/php547.fcgi
     
   
   
   




7. Finally I changed /etc/hosts to read

   
   
   

   127.0.0.1   localhost
   127.0.0.1   547.localhost
   127.0.0.1   5317.localhost
   
   # The following lines are desirable for IPv6 capable hosts
   ::1     ip6-localhost ip6-loopback
   
   fe00::0 ip6-localnet
   ff00::0 ip6-mcastprefix
   ff02::1 ip6-allnodes
   ff02::2 ip6-allrouters
   

Now I would expect things to work, but sadly they don't. Instead that a php files runs through php it just outputs the raw file.

There must be something I missed here, but I have gone through the process many times and I can't figure out where it goes wrong.