use CodeBridge\Transfer;

$transfer_client = new Transfer();

$file_path = realpath('./whatever.ext');
$download_url = $transfer_client->send($file_path);

Multiple files

use CodeBridge\Transfer;

$transfer_client = new Transfer();

$file_paths = ['./whatever.ext','./whatever2.ext'];
$download_url = $transfer_client->send($file_paths,'custom_zip_name'); //Returns custom_zip_name.zip

More complex example (for self hosted installations)

use CodeBridge\Transfer;

$transfer_client = new Transfer('http', 'yourdomain.com');

$file_path = realpath('./whatever.ext');
$download_url = $transfer_client->send($file_path, 'somecustomname.ext');