What are the best practices for specifying the path to a folder on a different server in PHP?

When specifying the path to a folder on a different server in PHP, it is important to use the correct protocol (such as FTP or HTTP) and provide the full path to the folder. Additionally, ensure that the server hosting the folder allows remote access and that you have the necessary permissions to access the folder.

// Example of specifying the path to a folder on a different server using FTP protocol
$server = 'ftp.example.com';
$username = 'username';
$password = 'password';
$remote_path = '/path/to/folder/';

// Connect to the remote server
$connection = ftp_connect($server);
$login = ftp_login($connection, $username, $password);

// Change directory to the remote folder
ftp_chdir($connection, $remote_path);

// List files in the remote folder
$files = ftp_nlist($connection, '.');

// Close the connection
ftp_close($connection);