Which versions of PHP and WordPress should I use for the latest version of GP Premium that are as up-to-date as practically possible but will also give me the least hassle? I cannot find this information in the documentation, and the use cases in the forum seem to be all over the place. I know this is a difficult question, but I wonder to what degree it can be answered.
Which versions of PHP and WordPress should I use for the latest version of GP Premium and corresponding themes found in GP Premium library?