1. Download ionCube loaders
sudo wget http://downloads.ioncube.com/loader_downloads/ioncube_loaders_lin_x86.tar.gz
2. Extract
sudo tar zxvf ioncube_loaders_lin_x86.tar.gz
3. Move to a permanent location
sudo mv ioncube /usr/local/
4. Add reference to your php.ini file (sudo pico /etc/php5/apache2/php.ini)
zend_extension = /usr/local/ioncube/ioncube_loader_lin_5.2.so
There are a few versions of the loader in the tar archive. Use the one that matches your PHP version.
5. Restart apache
sudo /etc/init.d/apache2 restart
6. check installation using following command:
php -v
you should see following output:
PHP 5.1.6 (cli) (built: Apr 7 2009 08:00:04)
Copyright (c) 1997-2006 The PHP Group
Zend Engine v2.1.0, Copyright (c) 1998-2006 Zend Technologies
with the ionCube PHP Loader v3.1.34, Copyright (c) 2002-2009, by ionCube Ltd.