PHP Manual: Save a specific body section to a file

bool imap_savebody ( resource $imap_stream , mixed $file , int $msg_number [, string $part_number = "" [, int $options = 0 ]] )

Saves a part or the whole body of the specified message.

imap_stream

An IMAP stream returned by imap_open.

file

The path to the saved file as a string, or a valid file descriptor returned by fopen.

msg_number

The message number

part_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

options

A bitmask with one or more of the following:

FT_UID - The msg_number 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.

imap_savebody