Benefits, rewards and steps needed to become a Zend Certified Engineer (ZCE) and get listed in the Zend Yellow pages for PHP professionals.

A bottom-up rewrite of the PHP scripting engine. It features a modular architecture, vastly improved performance, and greater scalability. [Commercial]

Formerly known as Zend Encoder, protects PHP applications for secure deployment without exposing the source code. Website details additional products, certifications and a developer zone. [Commercial]

A discussion area for questions and discussion of issues in PHP.

The creators of the PHP engine. Mainly small code snippets.