BunnyCDN PHP FTP upload

bcdn_ftp_upload.php

<?php
function uploadFTP($server, $username, $password, $file_to_upload, $save_file_as){
    $connection = ftp_connect($server);
    if (@ftp_login($connection, $username, $password)){
        // connection success
    }else{
        return "Error connecting to $server";
    }
    ftp_pasv($connection, true);
    ftp_put($connection, $save_file_as, $file_to_upload, FTP_BINARY);
    ftp_close($connection);
    return "Uploaded $file_to_upload to $server and saved as $save_file_as";
}

//call to upload a file
uploadFTP("storage.bunnycdn.com", "USERNAME", "PASSWORD", "filetoupload.zip", "saveitas.zip");