I'm having a terrible problem. I got my hosting to install PHP5, and now all my websites are just showing the php and html source code; nothing is being parsed. Why is this? How do I stop this? I read somewhere that it has something to do with the short php opening (<? as opposed to <?php) but I always use <?php. What else could be the problem? People who visit my sites can now view the source code

Help is appreciated. Thank you.