Are there any PHP functions or libraries that can help with securely accessing directories on remote servers?

When accessing directories on remote servers in PHP, it's important to ensure that the connection is secure to prevent unauthorized access. One way to achieve this is by using the SSH2 extension in PHP, which allows you to securely connect to remote servers using SSH protocol. By utilizing functions provided by the SSH2 extension, you can securely access directories on remote servers and perform operations like listing files, reading files, and uploading files.

// Connect to remote server securely using SSH2
$connection = ssh2_connect('remote_server_ip', 22);
ssh2_auth_password($connection, 'username', 'password');

// Securely list files in a directory on the remote server
$stream = ssh2_exec($connection, 'ls /path/to/directory');
stream_set_blocking($stream, true);
$data = stream_get_contents($stream);
fclose($stream);

// Output the list of files
echo $data;