The current version of CommSy requires php >= 5.3.0.
First of all you need to download CommSy from Sourceforge. The latest version is always available at https://sourceforge.net/projects/commsy/files/latest/download.
Get the archive, extract it and upload it to your LAMP environment.
Notice: The only folder that needs to be accessible by the web server is htdocs/.
Set up your document root pointing to htdocs/ in your commsy installation path.
By default most web servers will look for an index.php file, which doesn't ship with CommSy. The main entry point is the file commsy.php. If you don't want to reconfigure your server, you can create a simple wrapping index.php file:
:::php
<?php
require 'commsy.php';
If this is a fresh installation, CommSy will guide you to through a short installation process when accessing the web frontend. Just follow the instructions to complete the installation process.
The main configuration file is etc/cs_config.php.
Notice: Up to version 8.1.1, you need to add the following line at the end of the configuration:
:::php
$c_smarty = true;