We've built a php application that we need to host on a Windows Server 64 bit platform (due to another software being present that we need to access).
However, our php application has been built on a linux environment.
Is there anything we need to be watchful of when running apache and this php application on a Windows environment?
Mostly any PHP script is cross-platform and normally you don't care about platform, but there are some platform-specific things like absolute paths (C:/www | /var/www/) and shell commands. If you don't use them then it will work. If not, it will not take much time for fixing.
There may be some good reading here on the official PHP documentation on running PHP on Windows.