Things certainly move fast on the web. Just a few weeks ago we described our PHP setup on this blog and we proudly explained that we had both PHP 5.2 and 5.3 installed on our servers. But now that blog post is obsolete because PHP 5.4 was just released!
Fortunately we’ve already installed PHP 5.4 on all of our servers, just days after it was released:
[remi@web300 ~]# php54 -v PHP 5.4.0 (cli) (built: Mar 2 2012 06:58:40)
We’ve also added a new Static/CGI/PHP-5.4 to our control panel for the early adopters.
If you want to switch an existing PHP app to PHP-5.4 you can do so by putting this in a .htaccess file:
<FilesMatch \.php$>
SetHandler php54-cgi
</FilesMatch>
Amongst many other improvements PHP-5.4 is faster and uses less memory and it provides a new feature called Traits which enables developers to reuse code.
More details are available in the ChangeLog.

Are you aware that PHP 5.4 on control panel is listed under “static”, but not under “PHP” or “CGI”? Of course, not a big issue.
Anyway, great job, thank you!
It is really gr8 news that PHP-5.4 is released! I’m going to putting your given code into .htaccess file. thanks for gave us update news.
Can we change a php5.3 install to 5.4 from the control panel?
Hi,
With an existing WordPress installation (using PHP 5.2) is it OK to simply paste
SetHandler php54-cgi
into the existing .htaccess file, just before the “# BEGIN WordPress” part?
C