The popular open source Zend Framework just got some slick enhancements. Learn what's new in V1.5 and how upgrades, including Zend_Form, Zend_Layout, and Zend_View, enhanced support for GData Web services, and improved Ajax support can help PHP developers easily roll out cutting-edge Web applications.

They walk through each of the new components (or features in them) like Zend_Form and Zend_Layout/Zend_View with examples included. There's also mention of other miscellaneous updates like the addition of OpenID and InfoCard support, a LDAP authentication module and an interface with Google's GData service.

In PHP 5.3 there will be another magic constant __DIR__. [...] To allow this, the internal function php_dirname() has been moved in the Zend Engine and is now called zend_dirname(). Nevertheless an alias still exists.

__DIR__ will join the other constants (like __LINE__ and __FUNCTION__) to help give the currently running script a little introspection for things like its filename, what class it's currently in and now, what directory the file currently lives in.