Relatively new DreamHost customer here. I have several sites that currently sport PHP 5.3, however I've become interested in some of the new features that PHP 5.4 will support including traits and closures. I know 5.4 is still in release candidate status so it's not likely to get a system-wide install anytime soon. But is there any way I can set up my own PHP environment and have it invoked by Apache? I'm comfortable with building the PHP source code - I've done it many times.