Copies mail messages specified by msglist
to specified mailbox.
imap_streamAn IMAP stream returned by imap_open().
msglist
msglist is a range not just message
numbers (as described in RFC2060).
mailboxThe mailbox name, see imap_open() for more information
options
options is a bitmask of one or more of
CP_UID - the sequence numbers contain UIDS
CP_MOVE - Delete the messages from the current mailbox after copying