It's amateur question hour... I just tried to upload one of my projects to a new subdomain on my site. To my wonderful surprise, it turns out that my host has PHP installed as CGI instead of an Apache module (why? because they were all abused as children and wish to take it out on their customers, and I'm locked in to them for now...) so I can't use php_ini in my .htaccess file without causing an internal server error. Grrr. So I was going to use ini_set() to add paths for both the host (linux) and my local server (windows), however, we have a small problem.
The second causes a problem because it's reading the semi-colon as an end of line delimiter, even though it's in quotes. I can't use a colon with windows paths, of course. I've solved this problem by just reverting to my old method of