Studs MVC Framework+ contains a port of Apache's Jakarta Struts to PHP, though the libraries included in the rest of the project are much more vast. In order to implement the Struts port, it was necessary to build a core, object-oriented API in the style of the JDK and the Jakarta Commons, a servlet container to handle HTTP requests and to invoke servlet classes, and finally, a parsing engine for JSP-style template pages. In the end, the result is an environment which is very similar to that provided by a J2EE Web Container, only everything is implemented in PHP. While it was possible to carry over many of the concepts, designs and mechanisms from J2EE, some limitations do exist due to the nature of the PHP programming language, such as the lack of checked exceptions (runtime only).
MochiPHP is a lightweight framework for PHP that adopts component and page oriented design with a simple database and object-persistence library. Page oriented design: write a class and template pair per page. Form components hide complex HTML markup and user interaction handling. Persistent objects with auto-generated property accessors.
WSO2 Web Services Framework for PHP is a PHP extension for providing and consuming Web services. WSO2 WSF/PHP supports SOAP 1.1, SOAP 1.2, WSDL generation, WSDL mode (WSDL 1.1 and WSDL 2.0), REST style invocation, integrated Data Services capabilities, and some of the key WS-* stack specifications such as: SOAP MTOM, WS-Addressing, WS-Security, WS-SecurityPolicy, and WS-ReliableMessaging.