So i updated PHP from 5.4.20 to 5.4.35, this is on a windows box so i basically replaced all the old php files with the new ones as advised. I ensured the ini file remained untouched. The location hasn't changed either.
The webpage no longer loads, just a blank page. Looking in the error log for apache it states error 500.
Not really sure were else to look for trouble shooting so any help would be great. It's only on a test env so no big rush,