So now we have PHP 5.4 with php-cgi installed. We can now setup our PHP site using Pow! All we have to do is create our config.ru

config.ru

require  'rack' 
require  'rack-legacy' 
require  'rack-rewrite' 

INDEXES  =  [ 'index.html' , 'index.php' ,  'index.cgi' ] 

ENV [ 'SERVER_PROTOCOL' ]  =  "HTTP/1.1" 

use  Rack : :Rewrite  do 
  rewrite  %r{(.*/$)} ,  lambda  { | match ,  rack_env | 
    INDEXES . each  do  | index | 
      if  File . exists? ( File . join ( Dir . getwd ,  rack_env [ 'PATH_INFO' ] ,  index )) 
        return  rack_env [ 'PATH_INFO' ]  +  index 
      end 
    end 
    rack_env [ 'PATH_INFO' ] 
  } 
end 

use  Rack : :Legacy :: Php ,  Dir . getwd ,  '/usr/local/bin/php-cgi' 
use  Rack : :Legacy :: Cgi ,  Dir . getwd 
run  Rack : :File . new  Dir . getwd