Hello,
With pleasure, we can help you to install php 5.6 on your plesk vps server. We can install multiple php version (php handler) on your plesk server, so that you can easily switch to any php versions for different websites.
You have to pay only $25 for this project and need to pay upon your satisfaction after the work has been completed. 100% customer satisfaction is our Moto. Most of the tasks will be completed within an hour or two.
We are professional server administrators having strong knowledge in the field of UNIX/LINUX and Windows.
If you are willing to handover this project to us, you will get future support for all issues from our team.