imap_fetchheader Returns header for a message &reftitle.description; stringfalseimap_fetchheader IMAP\Connectionimap intmessage_num intflags0 This function causes a fetch of the complete, unfiltered RFC2822 format header of the specified message. &reftitle.parameters; &imap.imap-parameter.imap; message_num The message number flags The possible flags are: FT_UID - The message_num 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, &return.falseforfailure;. &reftitle.changelog; &Version; &Description; &imap.changelog.imap-param; &reftitle.seealso; imap_fetch_overview