For installation of ioncube for perticular account then goto

http://www.ioncube.com/loaders.php

download it one server server where it is available. you need to do the following process on the server.

1 go to user directory and wget http://downloads.ioncube.com/loader_downloads/ioncube_loaders_lin_x86.tar.gz

2 Extract the tar file with tar -zxvf ioncube_loaders_lin_x86.tar.gz

3. change the permission chown user:user ioncube

4. then goto ioncube directory cd /home/user/ioncube and again change the ownership of all files to user:user

5.after changing the permission copy ioncube-encoded-file.php and ioncube-loader-helper.php in public_html by

cp ioncube-encoded-file.php ../public_html/

cp ioncube-loader-helper.php ../public_html/

6.then goto public_html folder of that user and again change the ownership to user:user for ioncube

7 Now ioncube is get installed you can access that using access ioncube by http://domain.com/ioncube-loader-helper.php

enjoy…..:)