FTP Copy

I've been looking on php.net, but can't find anything that covers this... Basically, I am using PHP FTP to connect to an FTP server and run some functions. I want to copy a directory on the FTP server to another directory on the FTP server. Since there isn't an ftp_copy() function, I have to use ftp_get() to bring the file to the local webserver temp folder, then use ftp_put() to place it into a different folder on the FTP server. This is quite a big pain, since the webserver is not on the same network as the remote FTP server, so it must download the file and then upload it to a different place (takes a long time). Is there an FTP that will just copy the file/folder from the FTP server without the need to download/upload it somewhere else? Thanks, Matt