Aaron Wormus mentioned today about this tutorial - Apache2-SSL-PHP5-Howto (+ Zend Optimizer And IonCube Loader).

This document describes how to install an Apache web server (2.0.x) with SSL and PHP5 (with Zend Optimizer and ionCube Loader) enabled. This howto is meant as a practical guide; it does not cover the theoretical backgrounds. They are treated in a lot of other documents in the web.

They continue on, demonstrating how to install each of the packages, coordinate the PHP install with Apache, and get the Zend Optimizer and IonCube Loader installed. If all goes well, you should be able to restart the installation and Apache 2 will load with OpenSSL, IonCube and the Optimizer in place...