imap_fetchheader Returns header for a message &reftitle.description; stringimap_fetchheader resourceimap_stream intmsg_number intoptions0 This function causes a fetch of the complete, unfiltered RFC2822 format header of the specified message. &reftitle.parameters; &imap.imap-stream.description; msg_number The message number options The possible options are: FT_UID - The msgno argument is a UID FT_INTERNAL - The return string is in "internal" format, without any attempt to canonicalize to CRLF newlines FT_PREFETCHTEXT - The RFC822.TEXT should be pre-fetched at the same time. This avoids an extra RTT on an IMAP connection if a full message text is desired (e.g. in a "save to local file" operation) &reftitle.returnvalues; Returns the header of the specified message as a text string. &reftitle.seealso; imap_fetch_overview