I’ve released most of the components of PHP 5 iConnect architecture, based on my PHP 5 Carthag platform.
This architecture is similar in many ways to J2EE and offers: a platform, an enterprise application server (like EJB), a web application server (like Tomcat) and a portal server. Its runtime is based on PHP 5 and Apache.
Here is a better description of the iConnect architecture.
Here you can download iConnect containers and components.