(PHP 5 >= 5.3.6, PHP 7, PHP 8)
imap_fetchmime — Fetch MIME headers for a particular section of the message
$imap
, int $message_num
, string $section
, int $flags = 0
) : string|falseFetch the MIME headers of a particular section of the body of the specified messages.
imap由 imap_open() 返回的 IMAP 流。
message_numThe message number
sectionThe part number. It is a string of integers delimited by period which index into a body part list as per the IMAP4 specification
flagsA bitmask with one or more of the following:
FT_UID - The message_num is a UID
FT_PEEK - Do not set the \Seen flag if
not already set
FT_INTERNAL - The return string is in
internal format, will not canonicalize to CRLF.
Returns the MIME headers of a particular section of the body of the specified messages as a
text string, 或者在失败时返回 false.