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imap_fetchstructure

(PHP 4, PHP 5, PHP 7)

imap_fetchstructure — Read the structure of a particular message

说明

object imap_fetchstructure ( resource $imap_stream , int $msg_number [, int $options = 0 ] )

Fetches all the structured information for a given message.

参数

imap_stream: 由 imap_open() 返回的 IMAP 流。
msg_number: The message number
options: This optional parameter only has a single option, FT_UID , which tells the function to treat the msg_number argument as a UID.

返回值

Returns an object includes the envelope, internal date, size, flags and body structure along with a similar object for each mime attachment. The structure of the returned objects is as follows:

Returned Objects for **imap_fetchstructure()**
type	Primary body type
encoding	Body transfer encoding
ifsubtype	`TRUE` if there is a subtype string
subtype	MIME subtype
ifdescription	`TRUE` if there is a description string
description	Content description string
ifid	`TRUE` if there is an identification string
id	Identification string
lines	Number of lines
bytes	Number of bytes
ifdisposition	`TRUE` if there is a disposition string
disposition	Disposition string
ifdparameters	`TRUE` if the `dparameters` array exists
dparameters	An array of objects where each object has an "attribute" and a "value" property corresponding to the parameters on the Content-disposition MIME header.
ifparameters	`TRUE` if the parameters array exists
parameters	An array of objects where each object has an "attribute" and a "value" property.
parts	An array of objects identical in structure to the top-level object, each of which corresponds to a MIME body part.

**Primary body type (value may vary with used library, use of constants is recommended)**
Value	Type	Constant
0	text	TYPETEXT
1	multipart	TYPEMULTIPART
2	message	TYPEMESSAGE
3	application	TYPEAPPLICATION
4	audio	TYPEAUDIO
5	image	TYPEIMAGE
6	video	TYPEVIDEO
7	model	TYPEMODEL
8	other	TYPEOTHER

**Transfer encodings (value may vary with used library, use of constants is recommended)**
Value	Type	Constant
0	7bit	ENC7BIT
1	8bit	ENC8BIT
2	Binary	ENCBINARY
3	Base64	ENCBASE64
4	Quoted-Printable	ENCQUOTEDPRINTABLE
5	other	ENCOTHER

参见

imap_fetchbody() - Fetch a particular section of the body of the message
imap_bodystruct() - Read the structure of a specified body section of a specific message

用户评论:

[#1] m dot staas at goowy dot com [2015-03-17 08:15:32]

Note that imap_fetchstructure does not return the object on failure. It returns false on failure.

e.g.
$structure = imap_fetchstructure($mailbox, $messagenumber);
var_dump($structure);

On success it will return the stdClass object as described in the manual.

On failure it will return:
bool(false)

Hope this will help people, for instance when you use a mailbox which is accessed and updated by multiple applications at the same time.

(I am using php 5.5.22 with imap client 2007e)

[#2] Anonymous [2013-06-20 22:52:59]

I improved the code from this post (
http://www.php.net/manual/en/function.imap-fetchstructure.php#51497) a bit, now it handles multi embedded email correctly, and gives you a content with not marking character, like the '=' (soft line break).

<?php //return is structured as // $mail = array ( 'body' => ... // 'attachment' => array() ); function _get_body_attach($mbox, $mid) { $struct = imap_fetchstructure($mbox, $mid); $parts = $struct->parts; $i = 0; if (!$parts) { $attachment = array(); $content = imap_body($mbox, $mid); } else { $endwhile = false; $stack = array(); $content = ""; $attachment = array(); while (!$endwhile) { if (!$parts[$i]) { if (count($stack) > 0) { $parts = $stack[count($stack)-1]["p"]; $i = $stack[count($stack)-1]["i"] + 1; array_pop($stack); } else { $endwhile = true; } } if (!$endwhile) { $partstring = ""; foreach ($stack as $s) { $partstring .= ($s["i"]+1) . "."; } $partstring .= ($i+1); if (strtoupper($parts[$i]->disposition) == "ATTACHMENT" || strtoupper($parts[$i]->disposition) == "INLINE") { $filedata = imap_fetchbody($mbox, $mid, $partstring); if ( $filedata != '' ) { // handles base64 encoding or plain text $decoded_data = base64_decode($filedata); if ( $decoded_data == false ) { $attachment[] = array("filename" => $parts[$i]->parameters[0]->value, "filedata" => $filedata); } else { $attachment[] = array("filename" => $parts[$i]->parameters[0]->value, "filedata" => $decoded_data); } } } elseif (strtoupper($parts[$i]->subtype) == "PLAIN" && strtoupper($parts[$i+1]->subtype) != "HTML") { $content .= imap_fetchbody($mbox, $mid, $partstring); } elseif ( strtoupper($parts[$i]->subtype) == "HTML" ) { $content .= imap_fetchbody($mbox, $mid, $partstring); } } if ($parts[$i]->parts) { if ( $parts[$i]->subtype != 'RELATED' ) { // a glitch: embedded email message have one additional stack in the structure with subtype 'RELATED', but this stack is not present when using imap_fetchbody() to fetch parts. $stack[] = array("p" => $parts, "i" => $i); } $parts = $parts[$i]->parts; $i = 0; } else { $i++; } } } $ret = array(); $ret['body'] = quoted_printable_decode($content); $ret['attachment'] = $attachment; return $ret; } ?>

[#3] raulggonzalez at gmail dot com [2010-09-21 05:54:18]

Hello eveybody,

After reading plenty of posts (some good, some others not so good) I want to post a function to find out whether an email is coming with attachments

The function can be called passing the object returned by imap_fetchstructure() or any of its parts (recursively)

<?php $inbox = imap_open($hostname,$username,$password) or die('Cannot connect to mail: ' . imap_last_error()); $struct = imap_fetchstructure($inbox,$uid,FT_UID); $existAttachments = existAttachment($struct); function existAttachment($part){ if (isset($part->parts)){ foreach ($part->parts as $partOfPart){ existAttachment($partOfPart); } } else{ if (isset($part->disposition)){ if ($part->disposition == 'attachment'){ echo '' . $part->dparameters[0]->value . ''; // here you can create a link to the file whose name is $part->dparameters[0]->value to download it return true; } } } } ?>

Hopefully somebody can use it as well

[#4] burninleo at gmx dot net [2010-08-03 09:42:25]

Use imap_errors() to get rid of sticky error messages about incorrect MIME headers.

[#5] Rui Torre rui_sharkye at hotmail dot com [2008-11-02 02:34:29]

I've made this two functions to decode mime headers and so far they are working just fine decoding all headers. Please let me know if you find any error. Hope they are useful for you too.

<?php function decode_headers($cabecalho){ while (preg_match('/^(.*)=\?([^?]*)\?(Q|B)\?(.*)$/Ui', $cabecalho)){ $cabecalho = preg_replace("/(\t|\r|\n)/", "", $cabecalho); $cabecalho = preg_replace("/\?(Q|B)\?=/Ui", "?\\1? =", $cabecalho); $partes_cabecalho = explode("?=", $cabecalho); $resultado = ""; foreach ($partes_cabecalho as $texto){ $texto = preg_replace("/\?(Q|B)\?\s=/Ui", "?\\1?=", $texto); $texto = preg_replace("/\?(Q|B)\?/Ui", "=?\\1=?", $texto); if (preg_match('/^(.*)=\?([^?]*)=\?(Q|B)=\?(.*)$/Ui', $texto)){ $partes_texto = explode ("=?", $texto); $parte = descodificar_parte($partes_texto[0], $partes_texto[1]); $parte .= descodificar_parte($partes_texto[3], $partes_texto[2]); } else { $parte = $texto; } if (strtoupper($partes_texto[1]) == "UTF-8"){ $parte = utf8_decode($parte);} $resultado .= $parte; } $cabecalho = $resultado; } return trim($cabecalho); } function descodificar_parte($texto, $codificacao){ if (trim($texto) == ""){ return "";} if (ucfirst($codificacao) == "B"){ $texto = base64_decode($texto); $texto = htmlspecialchars($texto); } else if (ucfirst($codificacao) == "Q"){ $texto = str_replace("_", " ", $texto); $texto = quoted_printable_decode($texto); } return $texto; } ?>

[#6] david at hundsness dot com [2008-09-02 02:31:01]

Here is code to parse and decode all types of messages, including attachments. I've been using something like this for awhile 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 ." "; $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. } } ?>

[#7] phpnet,a,emailaddress,cjb,net [2007-09-26 19:13:51]

Another comment to inform people about something that should really be in the function description:

imap_fetchstructure() downloads the entire email, attachments and all, rather than just the structure.
I guess it's an undocumented feature, not a bug.

I had assumed that the script would have only downloaded the amount of data that was returned, but my script downloaded a cumulative 2.5gig before i noticed. Hopefully no-one else will have this happen.

[#8] oersoep at gmail dot com [2006-01-29 23:58:57]

Please keep in mind that the "parameters" array is a stdClass object when there are no parameters, and NOT a zero-size array.
In PHP5 you'll get this error when iterating structure->parts[x]->parameters if there aren't any parameters for this part:

PHP Fatal error: Cannot use object of type stdClass as array in file.php on line 100

[#9] sirber at detritus dot qc dot ca [2006-01-04 11:48:58]

"Primary body type" of "unknown/unknown" will be int(9).

[#10] hans at lintoo dot dk [2005-09-22 07:07:46]

To fetch a single part (for example to investigate a charset or something like that)

<?php class StructureEngine { private $structureObject; public function __construct($structureInfo) { $this->structureObject = $structureInfo; } // snip.... public function getPart($partNum) { $path = split("[.]",$partNum); $currentPart = $this->structureObject; foreach ($path as $key => $num) { $currentPart = $currentPart->parts[$num-1]; } return $currentPart; } } ?>

[#11] hans at lintoo dot dk [2005-09-22 06:14:33]

A class for searching through a stucture object.
You can search matching 1-3 parameters or use the methods included.
Feel free to use it, correct it or extend it if you please. Enjoy!

http://lintoo.dk/public/structureengine.class.phps

The code was too wide for this manual, so I hope the link above will do. Here a quick overview instead:

<?php class StructureEngine { private $structureObject; public function __construct($structureInfo) {} public function locatePlain() {} public function locateHTML() {} public function locateAttachments() {} private function checkParam($part, $type, $value) {} private function findParts($partsArray, $prefix, $param1Type = 'type', $param1Value = 0, $param2Type = null, ...) {} } ?>

[#12] john at vetsurgeon dot org dot uk [2005-07-04 09:07:37]

A little script I threw together to break a message down and process it into a usable array

<?php //script will fetch an email identified by $msgid, and parse the its parts into an //array $partsarray //structure of array: //$partsarray[<name of part>][<attachment/text>] //if attachment- subarray is [filename][binary data] //if text- subarray is [type of text(HTML/PLAIN)][text string] //i.e. //$partsarray[3.1][attachment][filename]=filename of attachment in part 3.1 //$partsarray[3.1][attachment][binary]=binary data of attachment in part 3.1 //$partsarray[2][text][type]=type of text in part 2 //$partsarray[2][text][string]=decoded text string in part 2 //$partsarray[not multipart][text][string]=decoded text string in message that isn't multipart function parsepart($p,$i){ global $link,$msgid,$partsarray; //where to write file attachments to: $filestore = '[full/path/to/attachment/store/(chmod777)]'; //fetch part $part=imap_fetchbody($link,$msgid,$i); //if type is not text if ($p->type!=0){ //DECODE PART //decode if base64 if ($p->encoding==3)$part=base64_decode($part); //decode if quoted printable if ($p->encoding==4)$part=quoted_printable_decode($part); //no need to decode binary or 8bit! //get filename of attachment if present $filename=''; // if there are any dparameters present in this part if (count($p->dparameters)>0){ foreach ($p->dparameters as $dparam){ if ((strtoupper($dparam->attribute)=='NAME') ||(strtoupper($dparam->attribute)=='FILENAME')) $filename=$dparam->value; } } //if no filename found if ($filename==''){ // if there are any parameters present in this part if (count($p->parameters)>0){ foreach ($p->parameters as $param){ if ((strtoupper($param->attribute)=='NAME') ||(strtoupper($param->attribute)=='FILENAME')) $filename=$param->value; } } } //write to disk and set partsarray variable if ($filename!=''){ $partsarray[$i][attachment] = array('filename'=>$filename,'binary'=>$part); $fp=fopen($filestore.$filename,"w+"); fwrite($fp,$part); fclose($fp); } //end if type!=0 } //if part is text else if($p->type==0){ //decode text //if QUOTED-PRINTABLE if ($p->encoding==4) $part=quoted_printable_decode($part); //if base 64 if ($p->encoding==3) $part=base64_decode($part); //OPTIONAL PROCESSING e.g. nl2br for plain text //if plain text if (strtoupper($p->subtype)=='PLAIN')1; //if HTML else if (strtoupper($p->subtype)=='HTML')1; $partsarray[$i][text] = array('type'=>$p->subtype,'string'=>$part); } //if subparts... recurse into function and parse them too! if (count($p->parts)>0){ foreach ($p->parts as $pno=>$parr){ parsepart($parr,($i.'.'.($pno+1))); } } return; } //open resource $link=imap_open("{localhost:110/pop3}INBOX",'[YOUR USERNAME]','[YOUR PASSWORD]'); //fetch structure of message $s=imap_fetchstructure($link,$msgid); //see if there are any parts if (count($s->parts)>0){ foreach ($s->parts as $partno=>$partarr){ //parse parts of email parsepart($partarr,$partno+1); } } //for not multipart messages else{ //get body of message $text=imap_body($link,$msgid); //decode if quoted-printable if ($s->encoding==4) $text=quoted_printable_decode($text); //OPTIONAL PROCESSING if (strtoupper($s->subtype)=='PLAIN') $text=$text; if (strtoupper($s->subtype)=='HTML') $text=$text; $partsarray['not multipart'][text]=array('type'=>$s->subtype,'string'=>$text); } print_r($partsarray); ?>

[#13] masterbassist [2005-04-18 09:52:54]

I think the following line (when building attachment information)

>>> "filename" => $parts[$i]->parameters[0]->value

needs to be

>>> "filename" => $parts[$i]->dparameters[0]->value

The first version generated a PHP warning under PHP 5.0.3. The second version actually gets the filename.

[#14] spam at emielmols dot info [2005-04-01 03:47:00]

I've created a function which simply extracts basic message content as a string ($content) and attachments as an array ($attachments). I've tested it with messages from Outlook, Outlook Express and Hotmail. Perhaps it's useful to anyone.

<?php $struct = imap_fetchstructure($mbox, $mid); $parts = $struct->parts; $i = 0; if (!$parts) { $attachment = array(); $content = imap_body($mbox, $mid); } else { $endwhile = false; $stack = array(); $content = ""; $attachment = array(); while (!$endwhile) { if (!$parts[$i]) { if (count($stack) > 0) { $parts = $stack[count($stack)-1]["p"]; $i = $stack[count($stack)-1]["i"] + 1; array_pop($stack); } else { $endwhile = true; } } if (!$endwhile) { $partstring = ""; foreach ($stack as $s) { $partstring .= ($s["i"]+1) . "."; } $partstring .= ($i+1); if (strtoupper($parts[$i]->disposition) == "ATTACHMENT") { $attachment[] = array("filename" => $parts[$i]->parameters[0]->value, "filedata" => imap_fetchbody($mbox, $mid, $partstring)); } elseif (strtoupper($parts[$i]->subtype) == "PLAIN") { $content .= imap_fetchbody($mbox, $mid, $partstring); } } if ($parts[$i]->parts) { $stack[] = array("p" => $parts, "i" => $i); $parts = $parts[$i]->parts; $i = 0; } else { $i++; } } } echo "Analyzed message $mid, result: "; echo "Content: $content "; echo "Attachments:"; print_r ($attachment); ?>

[#15] y dot daradkeh at gmail dot com [2004-12-20 07:40:16]

Hey people, get the message attachments with this code:

<?php $mbox = imap_open("$imap_server".$f,$name,$pass); // delibertely choose a message with an attachment $info = imap_fetchstructure($mbox, $mno); // find out how may parts the object has $numparts = count($info->parts); $i=0; // find if multipart message if ($numparts >1) { echo "More than one part "; foreach ($info->parts as $part) { if ($part->disposition == "INLINE") printf("Inline message has %s lines ", $part->lines); elseif ($part->disposition == "attachment") { $i++; echo $i." Attachment/s found! "; echo "Filename: ".$part->dparameters[0]->value." "; } } } else echo "Only one part"; imap_close($mbox); ?>

[#16] aperez at informatica dot 24ruedas dot com [2004-06-16 12:10:15]

About above comment and source code I wrote: certainly, plain/html text files are attachments, but I've written my code thinking about web IMAP clients, where text parts are not for downloading, simply they are shown. That's the reason.

Thanks anyway. :)

[#17] passeniermaxime at hotmail dot com [2004-06-15 08:15:56]

I have written a code that check's for attachments.
There is a slight problem with the above code;
when you send a mail with a .txt document as attachment
the type will be 0 and so there won't be a attachment found.

I check for the disposition of the body part witch can be inline or attachment.
If this is an attachment he will display it.
You an also mix up both codes by checking on the type and the disposition.

//////////////////////////////////
/// $mbox = connection
/// $a_mails_sort[$i] = message id

$structuur = imap_fetchstructure($mbox,$a_mails_sort[$i]);
$bericht_delen=$structuur->parts;
for($i_delen = 0; $i_delen<=count($bericht_delen);$i_delen++)
 {
 if($bericht_delen[$i_delen]->disposition == "attachment")
 {
 $attachment = "OK";
 }// end if
 }//end for

[#18] aperez at informatica dot 24ruedas dot com [2004-05-25 12:12:43]

This is my function to check attachments:

<?php $est=imap_fetchstructure($con,$msg); if(checkAttachments($est)) { echo("You have attachment(s)"); } else { echo("You don't have attachment(s)"); } function checkAttachments($estMsg) { if(($estMsg->type!=0) && ($estMsg->type!=1)) { // Text and multipart parts will not be shown as attachments return(true); } else { // If there's no attachments, parts inside will be checked if($estMsg->parts) { $partMsg=$estMsg->parts; $i=0; // Parts will be checked while no attachments found or not all of them checked while(!(checkAttachments($partMsg[$i])) && ($i<sizeof($estMsg->parts))) { $i++; } // If any 'checkAttachment' calls returned 'true', 'i' should be // equal to number of parts(after increased in while). So, no // attachments found if($i==sizeof($estMsg->parts)) { return(false); } else { return(true); } } else { // If no parts and text or multipart type, no attachments return(false); } } } imap_close($con); ?>

I hope this helps somebody else(if bugs, thanks for your fixes).

[#19] richy at smilingsouls dot net [2004-01-28 03:08:07]

After many long hours of pouring over the object returned by imap_fetchstructure() I came up with the solution posted at the following url:

http://p2p.wrox.com/topic.asp?TOPIC_ID=9063

The url above provides an example of how to access variables in the object returned by imap_fetchstructure().  This class creates an object with member variables containing the correct part numbers which are compatible with the imap_fetchbody() function.

The structure returned looks something like this:

                       0 Raw Headers
$this->pid[$mid][0]  =  1 text/plain                        top level message
$this->pid[$mid][1]  =  2 message/rfc822                    entire unparsed message
                                                             multipart/mixed - part is skipped!
                           2.0 Raw Headers
$this->pid[$mid][2]  =      2.1 multipart/alternative       contains unparsed contents of next subpart (text/plain && text/html)
                                2.1.0 Raw Headers
$this->pid[$mid][3]  =          2.1.1 text/plain            2nd level inline embedded message
$this->pid[$mid][4]  =          2.1.2 text/html

$this->pid[$mid][5]  =      2.2 message/rfc822              entire unparsed message
                                                             multipart/mixed - part is skipped!
                                2.2.0 Raw Headers
$this->pid[$mid][6]  =          2.2.1 multipart/alternative
$this->pid[$mid][7]  =              2.2.1.1 text/plain      3rd level inline embedded message
$this->pid[$mid][8]  =              2.2.1.2 text/html
$this->pid[$mid][9]  = 2.2.2 image/jpeg
$this->pid[$mid][10] = 2.2.3 image/jpeg
$this->pid[$mid][11] = 2.2.4 image/jpeg
$this->pid[$mid][12] = 2.2.5 image/gif

Its important to note why multipart/related, multipart/mixed and certain multipart/alternative (if parent part is message/rfc822 && not multipart/mixed) parts are skipped, imap_fetchbody **does not** retreive a message part for these parts.  Which isn't a bug, as I have read in other places, these parts exist for the purpose of designing the viewer portion of a mail application.  Also, headers aren't assigned part numbers here because they are easy to pick out.

: )
Rich

[#20] chrislhill at "O_o" hotmail dot com [2003-10-23 11:36:49]

For people just beging this may help alot as I spent a couple hours just trying to relize how exact the array was stored. (at the time I did not know the print_r function :P)

$struct = imap_fetchstructure($mbox, $msgnumber);
print_r($struct);

Will give you a better example for your messages but they are called as $struct using the varible method above.

$struct->type; //would return the type
$struct->encoding //would return the encoding

and etc..

This can be done many different ways but that is the basics on pulling the info out of the structure of fetchstructure itself, I hope it helps someone starting because it wouldve helped me :/.

[#21] es96 at hotmail dot com [2003-08-13 02:38:58]

If you are getting CHARSET as US-ASCII even if the header has a Content-Type: field, make sure the header also has a MIME-Version: field.

For example, the following header will correcty report charset as KOI8-R

MIME-Version: 1.0
Content-Type: text/plain; charset="koi8-r"

Without the MIME-Version it will be reported as US-ASII

[#22] as1 at powersite dot com dot ar [2002-12-30 13:57:43]

Sorry, my before code is not complet:

$struct = imap_fetchstructure( $conn, $curMsg );

$i = 1;
while( imap_fetchbody( $conn, $curMsg, $i ) ){
  $struct->parts[$i-1] = imap_bodystruct( $conn, $curMsg, $i );
  $j = 1;
  while( imap_fetchbody( $conn, $curMsg, "$i.$j" ) ){
    $struct->parts[$i-1]->parts[$j-1] = imap_bodystruct( $conn, $curMsg, "$i.$j" );
    $j++;
    }
  $i++;
}

[#23] as1 at powersite dot com dot ar [2002-12-30 13:01:36]

If your imap_fetchstructure not retrive all parts, write it:

$struct = imap_fetchstructure( $conn, $curMsg );

$i = 1;
while( imap_fetchbody( $conn, $curMsg, $i ) ){
$struct->parts[$i-1] = imap_bodystruct( $conn, $curMsg, $i );
$i++;
}

[#24] paradise at ml75 dot com [2002-12-04 07:40:47]

I'm using freeBSD and had lots of problems with all functions/mail applications i could find on the net...

So i'm writing my own now..

Most of the stuff works fine now.. but i'm still working on the chooser to select the best part to show. (plain or HTML).

The #1 problem is that most functions give the wrong ID numbers beck to fetch the body.

Here's a sollution to that problem.. :P

// Debug function.. always handy until it's 100% completed..
 $attachments = array(); $dispos=0;
 $debug=true;
 function doDebug($msg){
 global $debug, $debug_depth, $dispos;
 if($debug){
 for($y = 0; $y < $debug_depth; $y++) echo("    ");
 if($dispos == 0) echo($msg." "); else echo("".$msg." ");
 }
 }

 function Check_Part($part,$id){
 global $attachments, $debug, $debug_depth, $dispos; $ans=sizeof($attachments);
 doDebug("+Checking part $id");
 $debug_depth++;
 doDebug("Parttype=".$part->type ."/". mimetype($part->type) ."/". $part->subtype);

 if($part->ifdisposition){ $dispos++; doDebug("Disposition"); }
 if($part->ifdescription){ doDebug("Description=".$part->description.""); }

 switch($part->type){
 case 1: if((strtolower($part->subtype) == "mixed")
 or (strtolower($part->subtype) == "alternative")
 or (strtolower($part->subtype) == "related")) break;

 default: $an = sizeof($attachments);
 if($part->ifdparameters){
 $dpara = $part->dparameters;
 for ($v=0;$v<sizeof($dpara);$v++){
 if (eregi("filename", $dpara[$v]->attribute))
 $fname = $dpara[$v]->value;}
 }
 if($part->ifparameters){
 if(empty($fname)){
 $para = $part->parameters;
 for ($v=0;$v<sizeof($para);$v++){
 if (eregi("name", $para[$v]->attribute)) $fname = $para[$v]->value;
 }
 }
 }
 if(empty($fname))$fname = "Onbekend";

 $attachments[$an]->id = ($an+1);
 $attachments[$an]->part = $id;
 $attachments[$an]->filename = $fname;
 $attachments[$an]->type=$part->type;
 $attachments[$an]->subtype=$part->subtype;
 $attachments[$an]->dispos=$dispos;
 $attachments[$an]->size=$part->bytes;
 doDebug("Filename=".$attachments[$an]->filename); break;
 }

 for($x = 0; $x < count($part->parts); $x++){
 Check_Part($part->parts[$x], $id.".".($x+1));
 }
 doDebug("Dit deel had iets nuttigs.");
 if($part->ifdisposition) $dispos--;
 $debug_depth--;
 doDebug("-End of part $id");
 }

 function decode_mail($mbox, $msg){
 global $attachments, $debug, $debug_depth;
 doDebug("+Decoding message $msg"); $debug_depth++;
 $obj = imap_fetchstructure($mbox, $msg, FT_UID); $moet_werken=true; $id=1;
 while($moet_werken){
 Check_Part($obj, $id);

 $moet_werken=false;
 }
 $debug_depth--; doDebug("-End of message $msg");
 }

Now to get this to work..
Decode_Mail([Mailbox connection], [Message Number]);

this is the outpu attachment array..
1--1.1.1--Onbekend--0--PLAIN--0--31
2--1.1.2--Onbekend--0--HTML--0--29
3--1.2--Beschrijving Nieuw E.doc--3--MSWORD--1--613718
--------------------------------------

PS.. "Onbekend" is dutch for "Unknown".

Good luck.
Paradise (www.ml75.nl)

[#25] theUNDERSCOREVoodooChileADGMXdotNET [2002-10-25 05:21:04]

you can easily see through everything with these functions:

function printarray($array){
 while(list($key,$value) = each($array)){
 if(is_array($value)){
 echo $key."(array):<blockquote>";
 printarray($value);//recursief!!
 echo "</blockquote>";
 }elseif(is_object($value)){
 echo $key."(object):<blockquote>";
 printobject($value);
 echo "</blockquote>";
 }else{
 echo $key."==>".$value." ";
 }
 }
}

function printobject($obj){
 $array = get_object_vars($obj);
 printarray($array);
}

end then do this:

 $struct = imap_fetchstructure($box,$mailnr);
 //$struct is een object!!
 drukobjectaf($struct);

you get an extended tree-view into the hierarchie of objects and arrays
Comparing different mails(changing thenumber) may bring more clarity into this matter

(these functions may not work properly as they are translated from my dutch original, but they ought to be OK)

[#26] jcastro at elnuevodia dot com [2002-09-20 13:16:28]

I think the above note about attachments is wrong. I tested sending files with and without attachments and I get the following 
with attachment: type=3 bytes=343648
no attachment: type=0 bytes=2
so checking for $struct->bytes == " " means nothing. At least in my test
running windows 2000, php4.2.1 using outlook and exchange. It seems that cheking the type will be more reliable

[#27] [2002-09-19 15:20:06]

This function sets MIME charset
parameter value to US-ASCII when
either Content-Type header is missing
or Content-Type header doesn't have
charset parameter. This may be compliant
to RFC 822, but this poses
a problem for a calling function that
has to deal with untagged messages
in MIME charset other than US-ASCII.
To work around this, US-ASCII
has to be treated as the absence of MIME charset.

[#28] kmakaveev(at)yahoo(dot)com [2002-06-25 07:29:21]

There's a little mistake in the code above!
The second echo must return "The message has no attachment!".
And that code must have some some additional thing to work properly! Maybe I must use ->parts to determine how many parts has a particular message!

[#29] trionon at mail dot ru [2002-02-22 08:42:24]

It's better to use special constants instead of digits for primary content-type:

        TYPETEXT                unformatted text
        TYPEMULTIPART           multiple part
        TYPEMESSAGE             encapsulated message
        TYPEAPPLICATION         application data
        TYPEAUDIO               audio
        TYPEIMAGE               static image (GIF, JPEG, etc.)
        TYPEVIDEO               video
        TYPEOTHER               unknown

These constants are documented in the source code of IMAP extension but they are still undocumented here :(

[#30] php AT firstnetimpressions.com [2002-02-18 13:15:02]

Point of clarification:

The seventh primary body type is not "Other" as documented, but actually "Model". This encompasses IGES, VRML, MESH, DWF, etc.

http://www.isi.edu/in-notes/iana/assignments/media-types/media-types

"Other" is the eigth primary body type.

[#31] mkknapp at quadrapod dot com [2001-04-25 18:48:45]

Assuming $struct = imap_fetchstructure($x,$y);

It is important to note that if a message has NO attachements, $struct->parts is an empty array, and $struct->bytes has a value. If a message as ANY attachements, $struct->bytes ALWAYS = 0. To get the size of the primary body, you have to call structure->part[0]->bytes. To get the size of the whole message, either strlen(imap_body) or add up the ->bytes of all the parts.

Another interesting note:
When there is body text and no attachements:
count($struct->parts) = 0
When there is body text and 1 attachement:
count($struct->parts) = 2

These imap functions could really use better documentation. Like giving the meathods for the dparameter and parameter classes...

[#32] jbrandt at europa dot com [2001-04-16 15:45:04]

Parsing the recursive object returned from imap_fetchstructure is easy. However trying to figure out the name of the section to pass to imap_fetchbody() isn't quite so straight forward because the naming conventions for the MIME sections are odd. If you copy and paste the following function you can pass an UID of an IMAP message and it will print out a hierarchy of the message and label each section.

The only required parameters are $mbox and $em_uid. The other parameters are used when the function needs to call itself.

Two functions mime_encoding() and mime_type() are not included. All they do is return string for the integer represention of a mime type/encoding.

<?php function imap_dbody($mbox, $em_uid, $mimeobj, $depth = 0, $section = 0) { // If this is the first run of the function then grab a object of the MIME structure of the message if($section == 0) $mimeobj = imap_fetchstructure($mbox, $em_uid, FT_UID); for($y = 0; $y < $depth; $y++) echo("???????"); echo(mime_type($mimeobj->type) . "/{$mimeobj->subtype}, "); echo(mime_encoding($mimeobj->encoding) . " ($section) "); for($x = 0; $x < count($mimeobj->parts); $x++) { // If we are in the root of the object increment by whole integers if($section == 0) $nsection = $x + 1; // If we are in the object and the first sub-object of our object isn't multipart // then increment the postfix by ".1" otherwise we are multipart or a message // and leave the section id alone to be handled by the next code block else if(($pos = strrpos($section, ".")) && $mimeobj->parts[0]->type != TYPEMULTIPART) $nsection = substr($section, 0, $pos) . "." . ($x + 1); else $nsection = $section; // If there are more parts to the part about to be processed reference it as a header with ".0" // but only if the child of this child isn't MULTIPART if(count($mimeobj->parts[$x]->parts)) { // Funny really, if a mime section is a inline message that has a multipart body you reference the message // mime section with "2" the inline message header with "2.0" and the subsections with "2.x" // However if the mime section is a inline message with only 1 part then you reference the // mime section in the message with 2.0 and the inline message body with 2.1 if(!($mimeobj->parts[$x]->type == TYPEMESSAGE && $mimeobj->parts[$x]->parts[0]->type == TYPEMULTIPART)) $nsection .= ".0"; else $nsection .= ""; } imap_dbody($mbox, $em_uid, $mimeobj->parts[$x], $depth + 1, $nsection); } // If after processing the entire MIME object the $x variable is still zero then we didn't // process a multipart mime message, it's just normal email so say so here. if($x == 0 && $section == 0) { echo(mime_type($mimeobj->type) . "/{$mimeobj->subtype}, "); echo(mime_encoding($mimeobj->encoding) . " (1) (NOT MIME MULTIPART) "); } } ?>

[#33] vksgeneric at hotmail dot com [2000-02-02 17:22:45]

It looks like some clients (e.g. outlook) can attach a file that has two mime-types associated with it, like:

Content-Type: model/vrml,x-world/x-vrml

This bombs the parsing procedure somewhere in c-client, I guess, and as a result ifparameters is set to false for the respective part, and you can not retrieve filename, mimetype, or any other parameters.

[#34] hholzgra at media-engineering dot de [1999-12-15 13:59:00]

the parts objects are identical in
structure to those returned by imap_fetchstructure, describing one subfolder each

parameters and dparameters are MIME-specific, theese contain the
extra parameters provided in the Content-Type and Content-Disposion Header lines such as Charset or Filename