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PHP 5.4.0 released!

Note: This article was originally published at PHP.net news & announcements on 2 March 2012.
PHP.net news & announcements

The PHP development team is proud to announce the immediate release of PHP 5.4.0. This release is a major improvement 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.

For users upgrading from PHP 5.3 there is a migration guide available here, detailing the changes between those releases and PHP 5.4.0.

Further details about the PHP 5.4.0 release can be found in the release announcement, and the full list of changes are available in the ChangeLog.

Please note that it may take a while until the release is available on all mirrors.