The funny thing about php 5.3 and 5.4 is that they are pretty much compatible. I'm not familiar with this program, but if it was possible to get a version that does not require ioncube, it'd probably run on Stevie with minor adjustments. I'm running a php 5.4 app on Stevie myself, I literally changed 2 lines of code and commented out the version check. If Johnny isn't suitable for you and your developer is for some reason unwilling or unable to help you work around Stevie's limitations, you will need to wait for our new server to come online in a few months. It will offer 5.6 (or possibly 7) and the updated components that come with it, as well as the stability of Stevie.