Linux установка ioncube loader

Выкачиваем 

# wget http://downloads3.ioncube.com/loader_downloads/ioncube_loaders_lin_x86-64.tar.gz

Распаковываем

# tar xzf ioncube_loaders_lin_x86.tar.gz -C /usr/local/

проверяем версию php

# php -v
PHP 5.3.3 (cli) (built: Feb  2 2012 23:47:49)

т.е. 5.3, соответственно добавляем в /etc/php.ini 

zend_extension=/usr/local/ioncube/ioncube_loader_lin_5.3.so
zend_extension_ts=/usr/local/ioncube/ioncube_loader_lin_5.3.so

проверяем 

# php -v
PHP 5.3.3 (cli) (built: Feb  2 2012 23:47:49)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
    with the ionCube PHP Loader v4.5.1, Copyright (c) 2002-2013, by ionCube Ltd.

 или так

# php -m
...
[Zend Modules]
the ionCube PHP Loader

передергиваем апач

# /etc/init.d/httpd restart