Here is code to parse and decode all types of messages, including attachments. I've been using something like this for a while now, so it's pretty robust.
<?php
function getmsg($mbox,$mid) {
// input $mbox = IMAP stream, $mid = message id
// output all the following:
global $charset,$htmlmsg,$plainmsg,$attachments;
$htmlmsg = $plainmsg = $charset = '';
$attachments = array();
// HEADER
$h = imap_header($mbox,$mid);
// add code here to get date, from, to, cc, subject...
// BODY
$s = imap_fetchstructure($mbox,$mid);
if (!$s->parts) // simple
getpart($mbox,$mid,$s,0); // pass 0 as part-number
else { // multipart: cycle through each part
foreach ($s->parts as $partno0=>$p)
getpart($mbox,$mid,$p,$partno0+1);
}
}
function getpart($mbox,$mid,$p,$partno) {
// $partno = '1', '2', '2.1', '2.1.3', etc for multipart, 0 if simple
global $htmlmsg,$plainmsg,$charset,$attachments;
// DECODE DATA
$data = ($partno)?
imap_fetchbody($mbox,$mid,$partno): // multipart
imap_body($mbox,$mid); // simple
// Any part may be encoded, even plain text messages, so check everything.
if ($p->encoding==4)
$data = quoted_printable_decode($data);
elseif ($p->encoding==3)
$data = base64_decode($data);
// PARAMETERS
// get all parameters, like charset, filenames of attachments, etc.
$params = array();
if ($p->parameters)
foreach ($p->parameters as $x)
$params[strtolower($x->attribute)] = $x->value;
if ($p->dparameters)
foreach ($p->dparameters as $x)
$params[strtolower($x->attribute)] = $x->value;
// ATTACHMENT
// Any part with a filename is an attachment,
// so an attached text file (type 0) is not mistaken as the message.
if ($params['filename'] || $params['name']) {
// filename may be given as 'Filename' or 'Name' or both
$filename = ($params['filename'])? $params['filename'] : $params['name'];
// filename may be encoded, so see imap_mime_header_decode()
$attachments[$filename] = $data; // this is a problem if two files have same name
}
// TEXT
if ($p->type==0 && $data) {
// Messages may be split in different parts because of inline attachments,
// so append parts together with blank row.
if (strtolower($p->subtype)=='plain')
$plainmsg. = trim($data) ."\n\n";
else
$htmlmsg. = $data ."<br><br>";
$charset = $params['charset']; // assume all parts are same charset
}
// EMBEDDED MESSAGE
// Many bounce notifications embed the original message as type 2,
// but AOL uses type 1 (multipart), which is not handled here.
// There are no PHP functions to parse embedded messages,
// so this just appends the raw source to the main message.
elseif ($p->type==2 && $data) {
$plainmsg. = $data."\n\n";
}
// SUBPART RECURSION
if ($p->parts) {
foreach ($p->parts as $partno0=>$p2)
getpart($mbox,$mid,$p2,$partno.'.'.($partno0+1)); // 1.2, 1.2.1, etc.
}
}
?>