Softaculous can make installing popular web software a snap for yourself or for your users.
Log in to SSH on your server as root.
Run the following commands:
wget -N http://files.softaculous.com/install.sh chmod 755 install.sh ./install.sh
The installer will run automatically and will let you know once it has been completed.
Once the installer has finished, log into WHM and verify that Ioncube is enabled under Tweak Settings. If you need to do any further configuration for Softaculous, you can do this in WHM under Plugins > Softaculous