Php/docs/function.imap-fetchheader
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imap_fetchheader
(PHP 4, PHP 5, PHP 7)
imap_fetchheader — Returns header for a message
说明
imap_fetchheader
( resource $imap_stream
, int $msg_number
[, int $options
= 0
] ) : string
This function causes a fetch of the complete, unfiltered » RFC2822 format header of the specified message.
参数
imap_stream
- 由 imap_open() 返回的 IMAP 流。
msg_number
- The message number
options
- The possible
options
are:
-
FT_UID
- Themsgno
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)
-
返回值
Returns the header of the specified message as a text string.