“The PHP development team is proud to announce the immediate availability of PHP 5.4.0. This release is a major leap forward in the 5.x series, which includes a large number of new features and bug fixes.
Some of the key new features include: traits, a shortened array syntax, a built-in webserver for testing purposes and more. PHP 5.4.0 significantly improves performance, memory footprint and fixes over 100 bugs. “
and windows users
Direct Download Link : http://windows.php.net/downloads/releases/php-5.4.0-nts-Win32-VC9-x86.zip
$sudo apt -get update && apt-get upgrade
$sudo apt-get install php
How to use inbuilt web server :