Newly added php version doesn't work on a Windows 2008 box with IIS 7.5 and FastCGI. Any php file will throw a 500 Internal Server Error. Once I switch php to current version via PHP Manager. Everything works fine. The application is Moodle but it will throw the same error on even a blank php file that I wrote for testing purpose. The Check phpinfo() in PHP Manager will throw the same ISE 500.
The following attempts all failed. 1. Manually installed php into folder, create Handler mapping, create FastCGI settings, latest VC redistribute (both x64 and x86). 2. Delete all instances of the new php. Re-install it via WebPI. Verified handler mapps and FastCGI setting.
I can switch PHP via PHP Manager for my Moodle instances. Yes I have more than one instances. The ones with old php work and the ones with new php version will not work. Since Check phpinfo() in PHP Manager throws error, I ruled out my Moodle settings in troubleshooting. I turned on error logging in php.ini. The error log file remains blank.
I have read many threads and have checked my IIS settings about a million times in the last 2 days. Any suggestions would be appreciated.