PHP 5.4 is Here! What You Must Know | Envato Tuts+New Features and Improvements Some of the key new features include traits, a shortened array syntax, a built-in webserver for testing purposes, use of $this in closures, class member access on instantiation, <?= is always available, and more! PHP 5.4.0 significantly improves performance, memory footprint and fixes over 100 bugs. Notable deprecated/removed features include register_globals, magic_q
