将站点移动到新的IIS（7.5）PHP（5.4.21）服务器（相同的SQL后端）

I'm in the process of moving a site from one 2008 R2 server to another 2008 R. (EDIT: both are fully updated) The 'new' server did not have PHP installed so I installed PHP, then copied all the PHP files from the original server so should be identical. The site is backed by a SQL server which for all intents is identical (scripted the original and ran the script on the new). I also copied the original PHP documents.I'm in the process of moving a site from one 20