So finally I did it.
As
chrisf sugested the steps are:
1. Download Zend Guard (for php 5.3) from
http://www.zend.com/en/products/guard/downloads2. Unpack archive and upload the module ZendGuardLoader.so to /usr/lib/php/modules/
3. Create a ini file for php integration as in /etc/php.d/zendguard.ini with content
; Enable Zend Guard extension module
zend_extension=/usr/lib/php/modules/ZendGuardLoader_53.so
; Enables loading encoded scripts. The default value is On
zend_loader.enable=1
; Disable license checks (for performance reasons)
; zend_loader.disable_licensing=0
; The Obfuscation level supported by Zend Guard Loader. The levels are detailed in the official Zend Guard Documentation. 0 - no obfuscation is enabled
; zend_loader.obfuscation_level_support=3
; Path to where licensed Zend products should look for the product license. For more information on how to create a license file, see the Zend Guard User Guide
; zend_loader.license_path=
5. Restart web services with: sh /script/restart-web
6. The results should look like
php -v
PHP 5.3.28 (cli) (built: May 6 2014 10:13:47)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2013 Zend Technologies
with XCache v3.1.0, Copyright (c) 2005-2013, by mOo
with Zend Guard Loader v3.3, Copyright (c) 1998-2010, by Zend Technologies
with XCache Optimizer v3.1.0, Copyright (c) 2005-2013, by mOo
with XCache Cacher v3.1.0, Copyright (c) 2005-2013, by mOo
with XCache Coverager v3.1.0, Copyright (c) 2005-2013, by mOo
Thanks for all