SellCloud uses its own PHP builds so you can have multiple versions of PHP on a server independent of what Ubuntu ships.
If you try to use composer, you'll likely experience the following error.
ubuntu@precise64:~$ composer
No command 'composer' found, did you mean:
Command 'compose' from package 'mime-support' (main)
composer: command not found
The SellCloud composer executables are named like composer5.X-sp.
ubuntu@precise64:~$ composer5.4-sp -h ______ / ____/___ ____ ___ ____ ____ ________ _____ / / / __ \/ __ `__ \/ __ \/ __ \/ ___/ _ \/ ___/ / /___/ /_/ / / / / / / /_/ / /_/ (__ ) __/ / \____/\____/_/ /_/ /_/ .___/\____/____/\___/_/ /_/ Composer version 1.0.0-alpha7
For more information, see What SellCloud Installs, Why SellCloud Installs Its Own Nginx, Apache, and PHP Packages, and How to Use the PHP CLI.
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