[string$section = ""],
[int$flags = 0]
Saves a part or the whole body of the specified message.
An IMAP\Connection instance.
The path to the saved file as a string, or a valid file descriptor returned by fopen.
The message number
The part number. It is a string of integers delimited by period which index into a body part list as per the IMAP4 specification
A 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 true on success or false on failure.
|8.1.0||The imap parameter expects an IMAP\Connection instance now; previously, a resource was expected.|