(PHP 4, PHP 5, PHP 7)
imap_close — Close an IMAP stream
$imap_stream
   [, int $flag = 0
  ] )Closes the imap stream.
imap_streamAn IMAP stream returned by imap_open().
flag
       If set to CL_EXPUNGE, the function will silently
       expunge the mailbox before closing, removing all messages marked for
       deletion. You can achieve the same thing by using
       imap_expunge()
      
   Returns TRUE on success or FALSE on failure.