Customize a Vagrant Environment

synopsis.txt

I want to create an Vagrant environment I can use for local development. It's 
for a framework-less PHP project, that needs to be developed for specific PHP  
versions.  To begin, I need to use PHP 5.2.2. 

I have my code in ~/client/src on my Mac and need to sync this folder to the 
webroot on the VM using VirtualBox 4.3.10 and Vagrant 1.7.4. 
I use PHPStorm for development. 

I'll soon want to add virtual guest machines, each with their own PHP version 
to allow for testing, which would also have a synced directory to ~/client/src 
on my host machine. 5.4.45, 5.5.38, 5.6.25, and 7.0.x

As for the OS in the guest environments, I'd like use the latest Ubuntu, which 
I think is 16.04.

The goal is to get the project up to 7.0, but am planning to use the intermediate 
versions in 5.x to see where the code support breaks.