How can one handle authentication, such as username and password, when connecting to a server via SSH in PHP?

When connecting to a server via SSH in PHP, one can handle authentication by using the SSH2 extension. This extension allows for secure connections to be made using SSH protocols, including the ability to authenticate with a username and password. By utilizing the ssh2_auth_password function, one can pass in the connection resource, username, and password to authenticate successfully.

$connection = ssh2_connect('example.com', 22);
if (ssh2_auth_password($connection, 'username', 'password')) {
    echo "Authentication successful!";
} else {
    die('Authentication failed...');
}