@ John Webster – Copying the php/php.ini handler code to BPS Custom Code is a very simple and quick thing to do so if the help documentation is not clear then that will be changed to make it more clear. Go to the BPS Pro htaccess File Editor tab page >>> Your Current Root htaccess File tab >>> copy all of your root htaccess file code and post it in your forum reply so that I can give you step by step instructions on how to copy your php handler htaccess code to BPS Custom Code.
If the other sites are on the same host then the same step will apply to the other sites on that host. If the other sites are on different hosts then this step may or may not be needed. All web hosts do unique things specific to their servers with php handling/handler processing.