I was trying to find a simple workflow to create and run PHPT against multiple versions of PHP (rather then compiling all of them locally) and I couldn't. So, as part of the PHPTestFest2017 initiative, we (a couple of devs from PHPSP and PHP Dublin user groups) built a small tool to create, a very simple and straight forward, way to write and run PHPT for PHP 55, 56, 70, 71 and 72alpha2.
I have sent a message on twitter to Ben Ramsey about it and he asked to send it here with more details. Hope that the tools helps during the festival! Please feel free to give feedback and contribute.