PHP. Руководство по PHP. 2005
imap_close
imap_close
Description
bool imap_close (resource imap_stream [, int flag])Closes the imap stream. Takes an optional flag CL_EXPUNGE, which will silently expunge the mailbox before closing, removing all messages marked for deletion.
See also: imap_open().
imap_clearflag_full
imap_createmailbox