I will send you a Linux Server Daemon writen in Python and an example PHP client script. You can execute commands on your Server and send it back to your clients. Perfect for your own server control panel (game server, stream servers, ...).
This script is testet by many peoples and works very fast. You dont need the pecl ssh2 extension on your servers or other php extensions.
Python Server: - for $5 the Python script is protected and you cant edit the script. - for $20 extra you will recieve the sourcecode. - You can edit the cfgf to set the serverip, port, password, max connections and debugmode.