imap_sort

(PHP 4, PHP 5, PHP 7, PHP 8)

imap_sort — Liefert und sortiert Nachrichten eines Postfachs

Beschreibung

imap_sort(
    IMAP\Connection $imap,
    int $criteria,
    bool $reverse,
    int $flags = 0,
    ?string $search_criteria = null,
    ?string $charset = null
): array|false

Gibt eine gemäß den angegebenen Sortierkriterien sortierte Liste von Nachrichtennummern zurück.

Parameter-Liste

imap

Eine IMAP\Connection-Instanz.

criteria

Nur eines der folgenden Sortierkriterien:

SORTDATE - das Sendedatum
SORTARRIVAL - das Eingangsdatum
SORTFROM - die erste Absenderadresse
SORTSUBJECT - der Betreff
SORTTO - die erste Empfängeradresse
SORTCC - die erste CC-Empfängeradresse
SORTSIZE - die Größe der Nachricht in Bytes

reverse

Sortierung in umgekehrter Reihenfolge, wenn true

flags

Der Parameter flags enthält eine Bitmaske mit einem oder mehreren der folgenden Werte:

SE_UID - es werden UIDs anstelle von Nachrichtennummern zurückgegeben
SE_NOPREFETCH - Nachrichten werden nicht auf Vorrat abgerufen

search_criteria

Ein String mit Suchkriterien im IMAP2-Format. Details können imap_search() entnommen werden.

charset

Der zum Sortieren von Strings zu verwendende MIME-Zeichensatz.

Rückgabewerte

Gibt ein Array mit Nachrichtennummern zurück, die nach den angegebenen Sortierkriterien sortiert sind. Bei einem Fehler wird false zurückgegeben.

Changelog

Version	Beschreibung
8.1.0	Der Parameter `imap` erwartet nun eine IMAP\Connection-Instanz; vorher wurde eine gültige `imap`-Ressource erwartet.
8.0.0	`reverse` ist nun vom Typ bool statt int.
8.0.0	`search_criteria` und `charset` sind nun nullable (akzeptieren den (`null`-Wert).

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User Contributed Notes 7 notes

down

antoine dot spam-nono at maxg dot info ¶

18 years ago


I worked a lot with IMAP functions since I wrote a complete webmail and I've got a little tip about the imap_sort function :

There is a big difference between :

<?php
 imap_sort($imap, SORTDATE, 1);
// and 
 imap_sort($imap, SORTARRIVAL, 1);
?>

The first command will issue a
 >> FETCH 1:last (UID ENVELOPE BODY.PEEK[HEADER.FIELDS (Newsgroups Content-MD5 Content-Disposition Content-Language Content-Location Followup-To References)] INTERNALDATE RFC822.SIZE FLAGS)

While the second resulted in
 >> FETCH 1:last (UID INTERNALDATE RFC822.SIZE FLAGS)

As a result, using SORTDATE took 3 seconds longer to complete on a 800-emails mailbox, while the results are quite the same (except if you have to deal with forged dates or timezones, but the arrival order is far more logical)

My advice if you sort your emails by arrival is to actually use SORTARRIVAL, or better don't use imap_sort and go straight with message numbers (not UIDs). On large mailboxes, if you display messages per page, you will have significant performance increases (by avoiding 5 seconds of sorting).

down

boscolau at mac dot com ¶

19 years ago


in reply to graham_NOSPAM at rdb-concepts dot NOSPAM dot co dot uk here is a more elegant way to achieve sorting of search results:

function order_search($searchresults, $sortresults) {
    return array_values(array_intersect($sortresults,$searchresults));
}

example of using function:
   $sortresults = imap_sort($stream, $sort, $sortorder);
   $searchresults = imap_search($stream, $query);
   $sorted_search_results = order_search($searchresults, $sortresults);

sorted version of search results will then be held in the array of $sorted_search_results.

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persian-horde at metanetworking dot com ¶

19 years ago


imap_sort uses the c-client library to sort messages. This library currently does not 
support locale-based sort for foreign languages (Although it has charset option).
They are working on this(http://www.washington.edu/imap/IMAP-FAQs/#1.12),
but you can use the following function which uses strcoll() for locale-based sorting.
Pease note that this is required for SUBJECT field sorting, because most of 
other fields are sorted correctly by imap_sort in any locale:

function imap_locale_sort($stream,$criteria,$reverse,$locale,$options)
{
        if ($criteria!=SORTSUBJECT)
                return (imap_sort($stream,$criteria,$reverse,$options));

        $unsorted = array();
        $sortresult = array();

        $MC=imap_check($stream);
        $MN=$MC->Nmsgs;

        $overview = imap_fetch_overview($stream,"1:$MN",0);
        $k=0;
        while( list($key,$val) = each($overview))
        {
                $unsorted[$k]["uid"]=$val->uid;
                $unsorted[$k]["subject"]=MIME::decode($val->subject, NLS::getCharset());
                $k++;
        }
        usort ($unsorted, create_function('$a,$b','setlocale(LC_ALL,$locale);return strcoll($a["subject"],$b["subject"]);'));

        for ($m=0;$m<count($unsorted);$m++)
                array_push($sortresult,$unsorted[$m]["uid"]);

        if ($reverse)
                $sortresult = array_reverse($sortresult);

        return $sortresult;
}

Usage example:

$sorted = imap_locale_sort($stream,SORTSUBJECT,0,'fa_IR',0);

down

tilmauder at yahoo dot com ¶

20 years ago


in response to fprado's problem, the solution would be to use array_multisort() function on imap_fetchheader(). sdavey at datalink dot net dot au wrote an excellent example under array_multisort. I have used it to sort POP3 by message size. Unfortunately, my code is much too convoluted to post it here.

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-1

persian-horde at metanetworking dot com ¶

19 years ago


Hello,
We used MIME and NLS libraries in our previous code(imap_locale_sort) that
are part of PEAR and Horde projects, and so our function
was so specific. Here is the general (pure php) code for this
function:

function imap_locale_sort($stream,$criteria,$reverse,$locale,$options)
{
        if ($criteria!=SORTSUBJECT)
                return (imap_sort($stream,$criteria,$reverse,$options));

        $unsorted = array();
        $sortresult = array();

        $MC=imap_check($stream);
        $MN=$MC->Nmsgs;

        $overview = imap_fetch_overview($stream,"1:$MN",0);
        $k=0;
        while( list($key,$val) = each($overview))
        {
                $unsorted[$k]["uid"]=$val->uid;
                $unsorted[$k]["subject"]=imap_utf8($val->subject);
                $k++;
        }
        usort ($unsorted, create_function('$a,$b','setlocale(LC_ALL,$locale);return strcoll($a["subject"],$b["subject"]);'));

        for ($m=0;$m<count($unsorted);$m++)
                array_push($sortresult,$unsorted[$m]["uid"]);

        if ($reverse)
                $sortresult = array_reverse($sortresult);

        return $sortresult;
}

Sample usage:

$mbox = imap_open("{localhost:143}INBOX.sent-mail","userid","password");

if ($mbox)
    echo ("Connection Successful!");

$sorted = imap_locale_sort($mbox,SORTSUBJECT,0,'fa_IR',0);
print_r($sorted);
print ("\n\n");
$sorted = imap_sort($mbox,SORTSUBJECT,SE_UID);
print_r($sorted);

imap_close($mbox);

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-1

fprado at pmovil dot com dot br ¶

22 years ago


I use imap_sort() to go through POP3 accounts. However, sometimes, when the mailbox is too large, the response is incredibly slow.

I tried sniffing the network to discover the source of the problem and found that when imap_sort() is called for a POP3 server, it downloads the full body & attachs of ALL the messages in the mailbox. Since my POP server and my Web server are on differente machines, this caused the considerably slow response.

I've been trying a work-around this issue and if I manage to do this I'll post it here.

down

-3

graham_NOSPAM at rdb-concepts dot NOSPAM dot co dot uk ¶

22 years ago


for those of you with an old version of PHP that doesn't support the extra search paramater you may want to use this function:
function order_search($searchresults, $sortresults) {
    $searchhash = array();
    $returnresults = array();
    $count = 0;
    for ($i = 0; $i < sizeof($searchresults); $i++) {
        $searchhash[$searchresults[$i]] = true;
    }
    for ($i = 0; $i < sizeof($sortresults); $i++) {
        if (@$searchhash[$sortresults[$i]]) {
            $returnresults[$count] = $sortresults[$i];
            $count++;
        }
    }
    return $returnresults;
}

example of using function:
    $sortresults = imap_sort($stream, $sort, $sortdir, SE_UID);
    $searchresults = imap_search($stream, $search, SE_UID);
    $results = order_search($searchresults, $sortresults);

$results will then hold a sorted array of search results.

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