Are there any existing engines that facilitate SSH processes in PHP?

There is no built-in SSH support in PHP, but you can use external libraries like phpseclib to facilitate SSH processes. This library allows you to securely connect to remote servers via SSH and execute commands or transfer files.

<?php
// Include the phpseclib library
include('Net/SSH2.php');

// Connect to the SSH server
$ssh = new Net_SSH2('hostname');
if (!$ssh->login('username', 'password')) {
    exit('Login Failed');
}

// Execute a command on the remote server
echo $ssh->exec('ls -la');