If not, go to the custombuild directory and ./build zend.Zend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies
with the ionCube PHP Loader v4.2.2, Copyright (c) 2002-2012, by ionCube Ltd., and
with Zend Guard Loader v3.3, Copyright (c) 1998-2010, by Zend Technologies
Correct, in php 5.3 they replaced that for ZendLoader.i think i know what happen. php5.3 not support zend optimizer right?
So you could try installing ioncube loader, but if that does not help, the customer either needs a php 5.2 hosting or needs to have their zend stuff modernised, because php 5.2 is end of life already for some time.ZendGuard cannot load files that were encoded for Zend Optimizer, and vice versa -- they're effectively two separate products. If you've got an application that was encoded for Zend Optimizer, you're stuck on PHP 5.2.