Christian Stocker has a quick new post on the Liip blog today about an easy way to test the PHP 5.4 beta on your OS X-based platform with a simple package install and symlink.

Since the first beta of the next major release of PHP was released a few days ago, I thought we could provide packages for people who'd like to test it and see if there software is still running. And make adjustments or report bugs, if it doesn't. Complaining after the official stable release was made is usually too late, so testing your software against beta releases is very important. For your project and for PHP.

The install involves grabbing their package from the Liip server and calling the "packager.py" executable to make the version swap. You can go back to the pre-installed PHP5 version anytime by updating the symlink back. If you want more information on the package (or to report bugs) you can find the project over in github.