There are a number of PHP tools for installing packages.
Composer lets you locally install a set of dependencies. It is already installed at alwaysdata.
To install the dependencies listed in the
$ composer install
PEAR is one of the oldest package management tools for PHP. It is not ready installed but you can download it and run it:
$ wget http://pear.php.net/go-pear.phar $ php go-pear.phar
The PHP executable indicated at the PEAR binary level does not take into account the necessary preloaded extensions (e.g. XML). These paths need to be changed and specify
/usr/bin/php in place of