(PHP 4, PHP 5, PHP 7)
imap_renamemailbox — Rename an old mailbox to new mailbox
$imap_stream
   , string $old_mbox
   , string $new_mbox
   ) : bool
   This function renames on old mailbox to new mailbox (see
   imap_open() for the format of
   mbox names).
  
imap_streamAn IMAP stream returned by imap_open().
old_mboxThe old mailbox name, see imap_open() for more information
Passing untrusted data to this parameter is insecure, unless imap.enable_insecure_rsh is disabled.
new_mboxThe new mailbox name, see imap_open() for more information
Passing untrusted data to this parameter is insecure, unless imap.enable_insecure_rsh is disabled.
   Returns TRUE on success or FALSE on failure.