Currently PHP 5.3 hosting environments have to install and use "Zend Guard Loader" extension to process and execute Zend Guard encoded files. I was unable to make it execute files that were encoded for use with Zend Optimizer (PHP 5.2).
Any workaround for this?
The only way that worked for me was to include php 5.2 file instead of Zend Guards message that is displayed when no zend guard loader found with if condition checking php version. Dirty, but working, yet 2 files still required to be present, but no need to have loader switching them in unprotected code.