PHP 5 has just been released.
Some of the key features of PHP 5 include:
* The Zend Engine II with a new object model and dozens of new features.
* XML support has been completely redone in PHP 5, all extensions are now focused around the excellent libxml2 library
* A new SimpleXML extension for easily accessing and manipulating XML as PHP objects. It can also interface with the DOM extension and vice-versa.
* A brand new built-in SOAP extension for interoperability with Web Services.
* A new MySQL extension named MySQLi for developers using MySQL 4.1 and later. This new extension includes an object-oriented interface in addition to a traditional interface; as well as support for many of MySQL's new features, such as prepared statements.
* SQLite has been bundled with PHP.
* Streams have been greatly improved, including the ability to access low-level socket operations on streams.
* And lots more...