Geek asks and answers

PHP creating a multidimensional array of message flows from a multidimensional array (IMAP)

My question is this:

If you look below, you will see that there is a data structure with message identifiers, and then the final data structure containing the details of the message that should be aggregated with imap_fetch_overview. Message identifiers from imap_thread. The problem is that it does not put the email data in the position where the message identifier is.

Here is my data structure:

[5] => Array
    (
        [0] => 5
        [1] => 9
    )

[10] => Array
    (
        [0] => 10
        [1] => 11
    )

What I would like:

[5] => Array
    (
        [0] => messageDetails for id 5
        [1] => messageDetails for id 9
    )

[10] => Array
    (
        [0] => messageDetails for id 10
        [1] => messageDetails for id 11
    )

Here is the code that I still have:

$emails = imap_fetch_overview($imap, implode(',',$ids));

// root is the array index position of the threads message, such as 5 or 10
foreach($threads as $root => $messages){

    // id is the id being given to us from `imap_thread`
    foreach($message as $key => $id){

      foreach($emails as $index => $email){

         if($id === $email->msgno){
             $threads[$root][$key] = $email;
             break;
          }
      }
    }
 }

Here is a listing from one of $ email:

    [0] => stdClass Object
    (
        [subject] => Cloud Storage Dump
        [from] => Josh Doe
        [to] => jondoe@domain.com
        [date] => Mon, 21 Jan 2013 23:18:00 -0500
        [message_id] => <50FE12F8.9050506@domain.com>
        [size] => 2559
        [uid] => 5
        [msgno] => 5
        [recent] => 0
        [flagged] => 0
        [answered] => 1
        [deleted] => 0
        [seen] => 0
        [draft] => 0
        [udate] => 1358828308
    )

If you notice, msgno is the 5 that is activated in $id, so technically the data should be populated into the final data structure.

, .

, , .

, php api . , $root.

$addedEmails = array();
$thread = imap_thread($imap);
foreach ($thread as $i => $messageId) { 
    list($sequence, $type) = explode('.', $i); 
    //if type is not num or messageId is 0 or (start of a new thread and no next) or is already set 
   if($type != 'num' || $messageId == 0 || ($root == 0 && $thread[$sequence.'.next'] == 0) || isset($rootValues[$messageId])) { 
    //ignore it 
    continue; 
} 

if(in_array($messageId, $addedEmails)){
    continue;
}
array_push($addedEmails,$messageId);

//if this is the start of a new thread 
if($root == 0) { 
    //set root 
    $root = $messageId; 
} 

//at this point this will be part of a thread 
//let remember the root for this email 
$rootValues[$messageId] = $root; 

//if there is no next 
if($thread[$sequence.'.next'] == 0) { 
    //reset root 
    $root = 0; 
    } 
  }
$ids=array();
$threads = array();
foreach($rootValues as $id => $root){
    if(!array_key_exists($root,$threads)){
        $threads[$root] = array();
    }
    if(!in_array($id,$threads[$root])){
        $threads[$root][] = $id;
       $ids[]=$id;
    }
 }
 $emails = imap_fetch_overview($imap, implode(',', array_keys($rootValues)));

 $keys = array();
 foreach($emails as $k => $email)
 {
$keys[$email->msgno] = $k;
 }

 $threads = array_map(function($thread) use($emails, $keys)
{
// Iterate emails in these threads
return array_map(function($msgno) use($emails, $keys)
{
    // Swap the msgno with the email details
    return $emails[$keys[$msgno]];

}, $thread);
}, $threads);
+5
4

, php , , - . , , , PHP 5.5 5.3/5.4.

PHP 5.3/5.4 way

- . .

$keys = array();
foreach($emails as $k => $email)
{
    $keys[$email->msgno] = $k;
}

$ :

// Iterate threads
$threads = array_map(function($thread) use($emails, $keys)
{
    // Iterate emails in these threads
    return array_map(function($msgno) use($emails, $keys)
    {
        // Swap the msgno with the email details
        return $emails[$keys[$msgno]];

    }, $thread);

}, $threads);

: http://pastebin.com/rp5QFN4J

:

, , use(). PHP 5.3, PHP. php wiki https://wiki.php.net/rfc/closures#userland_perspective

PHP 5.5

, , , .

yield :

yield. yield return, , , , yield .

1- :

function genetateKeyMap($emails)
{
    foreach($emails as $k => $email)
    {
        // Yielding key => value pair to result set
        yield $email->msgno => $k;
    }
};
$keys = iterator_to_array(genetateKeyMap($emails));

:

function updateThreads($emails, $threads, $keys)
{
    foreach($threads as $thread)
    {
        $array = array();

        // Create a set of detailed emails
        foreach($thread as $msgno)
        {
            $array[] = $emails[$keys[$msgno]];
        }

        // Yielding array to result set
        yield $array;
    }
};
$threads = iterator_to_array(updateThreads($emails, $threads, $keys));

, :

, SPL Iterator, iterator_to_array(), ​​ , . , , .

: http://pastebin.com/9Z4pftBH

:

7000 5 ( 5 ):

                   Takes:       Memory used:
                   ----------------------------
3x foreach():      2.8s              5.2 MB
PHP 5.3/5.4 way    0.061s            2.7 MB
PHP 5.5 way        0.036s            2.7 MB

/ , , 45-77 , 3 foreach

script: http://pastebin.com/M40hf0x7

+4

_r $emails, ? , ?

 $threads[$root][$key] = $emails[$key];
+2

PHP , , , , , -

foreach($emails as $email) {
    foreach($threads as $root => $messages) {
        foreach($messages as $index =>$message_id){
            if($message_id == $email->msgno){
                 $threads[$root][$index] = $email;
            }
        }
    }
}

, , , , . ?

0

( , array('5' => array(5,7,8)), , , )

<?php 
$threads = imap_thread($imap, SE_UID);
/*
 * threads returns entries as follows:
 * <id>.num = <messageid>
 * <id>.next = <messageid of first reply to <id>>,  0 = no replies
 * <id>.branch = <messageid of nth. reply to <parent of id>>, 0 = no more branches
 * Keep in mind: _every_ message 'starts' a branch, but that may be empty.
 */
$nodes = array( 0 => array( 'children' => array()));
$ids = array();
foreach ($threads as $key => $val) {
    list($treeid,$type) = explode('.',$key);
    switch($type){
        case 'num':
            //the actual message number of this tree node
            //store id for retrieval later:
            $ids[$val] = null;
            if($val==0){
                //return to root
                $nodes[$treeid] = &$nodes[0];
            } else {
                if(!isset($nodes[$treeid])) $nodes[$treeid] = array();
                $nodes[$treeid] = array_merge($nodes[$treeid],array(
                    'id' => $val,
                    'message' => &$ids[$val],
                    'treeid' => $treeid));
            }
            break;
        case 'next':
            // 0 means no next message, anything else is a reply
            if (0!=$val) {
                if(!isset($nodes[$val])) $nodes[$val] = array('parent' => $treeid);
                $nodes[$treeid][] = &$nodes[$val];
            }
            break;
        case 'branch':
            //0 means end of branch, a number means continue as sibling \
            //so we need to know the parent
            if (0!=$val) {
                if(!isset($nodes[$val])) $nodes[$val] = array('parent' => $nodes[$treeid]['parent']?:0);
                $nodes[$nodes[$val]['parent']][] = &$nodes[$val];
            }
            break;
        default:
            trigger_error("Unknown tree traverse-type: $type", E_USER_WARNING);
    }
}
//the great thing is we can get all our ID at once:
$keystofetch = implode(',',array_filter(array_keys($nodes)));
$messages = imap_fetch_overview($imap,$keystofetch, FT_UID);
foreach($messages as $message){
    // you can of course store the _whole_ message in this thread like:
    // $nodes[$message->uid]['message'] = get_object_vars($message);
    // and do what you like with $tree[0]['children'] (be it a resursive array iterator,
    // or a  resursive function, your pick.
    // However, for this example we are going to only set message to a string of p.o.c 
    // (which is also nicer for our treeiterator)
    $ids[$message->uid] = $message->from.':'.$message->subject;
}
//let show the result:
$it = new RecursiveTreeIterator(new RecursiveArrayIterator($nodes[0]),
    RecursiveTreeIterator::BYPASS_CURRENT,
    CachingIterator::TOSTRING_USE_KEY);
foreach($it as $key => $item){
    echo "$key".(is_scalar($item)?': '.$item:'').PHP_EOL;
}

:

|-children
|-0
| |-parent: 0
| |-id: 35
| |-message: Friend Purple Acc2 <purple2@example.com>:A bigger message thread
| |-treeid: 1
| \-0
|   |-parent: 1
|   |-id: 7
|   |-message: Friend White <white@example.com>:Re: A bigger message thread
|   |-treeid: 2
|   \-0
|     |-parent: 2
|     |-id: 11
|     |-message: Friend Grey <grey@example.com>Re: A bigger message thread
|     |-treeid: 3
|     \-0
|       |-parent: 3
|       |-id: 39
|       |-message: Friend Purple Acc2 <purple2@example.com>:Re: A bigger message thread
|       |-treeid: 4
|       \-0
|         |-parent: 4
|         |-id: 40
|         |-message: Friend Pink <pink@example.com>:Re: A bigger message thread
|         |-treeid: 5
|         \-0
|           |-parent: 5
|           |-id: 38
|           |-message: Friend Yellow <yellow@example.com>:Re: A bigger message thread
|           |-treeid: 6
|           \-0
|             |-parent: 6
|             |-id: 12
|             |-message: Friend Pink <pink@example.com>:Re: A bigger message thread
|             |-treeid: 7
|             \-0
|               |-parent: 7
|               |-id: 25
|               |-message: Friend White <white@example.com>:Re: A bigger message thread
|               |-treeid: 8
|               \-0
|                 |-parent: 8
|                 |-id: 19
|                 |-message: Friend Black <black@example.com>:Re: A bigger message thread
|                 |-treeid: 9
|                 \-0
|                   |-parent: 9
|                   |-id: 23
|                   |-message: Friend Black <black@example.com>:Re: A bigger message thread
|                   |-treeid: 10
|                   \-0
|                     |-parent: 10
|                     |-id: 30
|                     |-message: Friend Yellow <yellow@example.com>:Re: A bigger message thread
|                     |-treeid: 11
|                     \-0
|                       |-parent: 11
|                       |-id: 2
|                       |-message: Friend Yellow <yellow@example.com>:Re: A bigger message thread
|                       |-treeid: 12
|                       |-0
|                       | |-parent: 12
|                       | |-id: 20
|                       | |-message: Me <me@example.com>:Re: A bigger message thread
|                       | |-treeid: 13
|                       | \-0
|                       |   |-parent: 13
|                       |   |-id: 1
|                       |   |-message: Fiend Silver <silver@example.com>:Re: A bigger message thread
|                       |   |-treeid: 14
|                       |   \-0
|                       |     |-parent: 14
|                       |     |-id: 41
|                       |     |-message: Fiend Silver <silver@example.com>:Re: A bigger message thread
|                       |     |-treeid: 15
|                       |     \-0
|                       |       |-parent: 15
|                       |       |-id: 27
|                       |       |-message: Friend Grey <grey@example.com>Re: A bigger message thread
|                       |       |-treeid: 16
|                       |       \-0
|                       |         |-parent: 16
|                       |         |-id: 17
|                       |         |-message: Friend Magenta <magenta@example.com>:Re: A bigger message thread
|                       |         |-treeid: 17
|                       |         |-0
|                       |         | |-parent: 17
|                       |         | |-id: 31
|                       |         | |-message: Friend Purple <purple@example.com>:Re: A bigger message thread
|                       |         | |-treeid: 18
|                       |         | \-0
|                       |         |   |-parent: 18
|                       |         |   |-id: 4
|                       |         |   |-message: Friend Black <black@example.com>:Re: A bigger message thread
|                       |         |   |-treeid: 19
|                       |         |   \-0
|                       |         |     |-parent: 19
|                       |         |     |-id: 37
|                       |         |     |-message: Friend Black <black@example.com>:Re: A bigger message thread
|                       |         |     |-treeid: 20
|                       |         |     \-0
|                       |         |       |-parent: 20
|                       |         |       |-id: 24
|                       |         |       |-message: Friend Purple Acc2 <purple2@example.com>:Re: A bigger message thread
|                       |         |       |-treeid: 21
|                       |         |       \-0
|                       |         |         |-parent: 21
|                       |         |         |-id: 13
|                       |         |         |-message: Friend White <white@example.com>:Re: A bigger message thread
|                       |         |         \-treeid: 22
|                       |         \-1
|                       |           |-parent: 17
|                       |           |-id: 15
|                       |           |-message: Friend Grey <grey@example.com>Re: A bigger message thread
|                       |           |-treeid: 23
|                       |           \-0
|                       |             |-parent: 23
|                       |             |-id: 18
|                       |             |-message: Friend Magenta <magenta@example.com>:Re: A bigger message thread
|                       |             |-treeid: 24
|                       |             \-0
|                       |               |-parent: 24
|                       |               |-id: 45
|                       |               |-message: Friend Black <black@example.com>:Re: A bigger message thread
|                       |               \-treeid: 25
|                       \-1
|                         |-parent: 12
|                         |-id: 46
|                         |-message: Friend Yellow <yellow@example.com>:Re: A bigger message thread
|                         |-treeid: 26
|                         \-0
|                           |-parent: 26
|                           |-id: 29
|                           |-message: Fiend Silver <silver@example.com>:Re: A bigger message thread
|                           |-treeid: 27
|                           \-0
|                             |-parent: 27
|                             |-id: 26
|                             |-message: Friend Magenta <magenta@example.com>:Re: A bigger message thread
|                             |-treeid: 28
|                             |-0
|                             | |-parent: 28
|                             | |-id: 34
|                             | |-message: Friend Grey <grey@example.com>Re: A bigger message thread
|                             | \-treeid: 29
|                             |-1
|                             | |-parent: 28
|                             | |-id: 33
|                             | |-message: Friend Yellow <yellow@example.com>:Re: A bigger message thread
|                             | |-treeid: 30
|                             | \-0
|                             |   |-parent: 30
|                             |   |-id: 36
|                             |   |-message: Friend White <white@example.com>:Re: A bigger message thread
|                             |   |-treeid: 31
|                             |   |-0
|                             |   | |-parent: 31
|                             |   | |-id: 10
|                             |   | |-message: Friend White <white@example.com>:Re: A bigger message thread
|                             |   | \-treeid: 32
|                             |   \-1
|                             |     |-parent: 31
|                             |     |-id: 48
|                             |     |-message: Friend Pink <pink@example.com>:Re: A bigger message thread
|                             |     \-treeid: 33
|                             \-2
|                               |-parent: 28
|                               |-id: 47
|                               |-message: Friend Purple <purple@example.com>:Re: A bigger message thread
|                               |-treeid: 34
|                               \-0
|                                 |-parent: 34
|                                 |-id: 5
|                                 |-message: Friend White <white@example.com>:Re: A bigger message thread
|                                 |-treeid: 35
|                                 \-0
|                                   |-parent: 35
|                                   |-id: 3
|                                   |-message: Friend Purple <purple@example.com>:Re: A bigger message thread
|                                   |-treeid: 36
|                                   \-0
|                                     |-parent: 36
|                                     |-id: 21
|                                     |-message: Friend Yellow <yellow@example.com>:Re: A bigger message thread
|                                     |-treeid: 37
|                                     \-0
|                                       |-parent: 37
|                                       |-id: 8
|                                       |-message: Friend Purple <purple@example.com>:Re: A bigger message thread
|                                       |-treeid: 38
|                                       \-0
|                                         |-parent: 38
|                                         |-id: 43
|                                         |-message: Friend White <white@example.com>:Re: A bigger message thread
|                                         |-treeid: 39
|                                         \-0
|                                           |-parent: 39
|                                           |-id: 28
|                                           |-message: Friend Purple <purple@example.com>:Re: A bigger message thread
|                                           |-treeid: 40
|                                           \-0
|                                             |-parent: 40
|                                             |-id: 42
|                                             |-message: Friend Brown <brown@example.com>:Re: A bigger message thread
|                                             |-treeid: 41
|                                             \-0
|                                               |-parent: 41
|                                               |-id: 22
|                                               |-message: Friend Purple <purple@example.com>:Re: A bigger message thread
|                                               \-treeid: 42
|-1
| |-parent: 0
| |-id: 9
| |-message: Friend Blue <blue@example.com>:RE: A bigger message thread
| \-treeid: 43
|-2
| \-parent: 0
|-3
| |-parent: 44
| |-id: 49
| |-message: Some Subcription <foo@example.com>:Newsletter #1
| \-treeid: 45
|-4
| |-parent: 44
| |-id: 50
| |-message: Some Subcription <foo@example.com>:Newsletter #2
| \-treeid: 46
\-5
  |-parent: 0
  |-id: 32
  |-message: Friend Red <red@example.com>:A second mainthread
  |-treeid: 47
  \-0
    |-parent: 47
    |-id: 16
    |-message: Friend Black <black@example.com>:Re: A second mainthread
    |-treeid: 48
    \-0
      |-parent: 48
      |-id: 14
      |-message: Friend Red <red@example.com>:Re: A second mainthread
      |-treeid: 49
      \-0
        |-parent: 49
        |-id: 6
        |-message: Friend White <white@example.com>:Re: A second mainthread
        |-treeid: 50
        \-0
          |-parent: 50
          |-id: 44
          |-message: Fiend Silver <silver@example.com>:Re: A second mainthread
          \-treeid: 51

:

  • script node, node, , .
  • imap_thread : id=9 , , , -. - , , Google Apps node.
  • ( = 2) - " ", N.num.N.branch,N.next, -, . /return to root $nodes[$treeid] = &$nodes[0]; . / , .

, (N- , N > 1):

$threads = imap_thread($imap, SE_UID);
$branchestarts = array();
foreach($threads as $key => $value){
    list($num,$type) = explode('.',$key);
    if (
        $type=='num'                     // an id
        && $value == 0                   // which is actually root
        && isset($threads[$num.'.next']) // then check for next
        && isset($threads[$threads[$num.'.next'].'.num'])
    ){
        $branchestarts[] = $threads[$threads[$num.'.next'].'.num'];
    } else if(
        $type=='branch'                   // branch movement
        && $value != 0                    // not back
        && isset($threads[$value.'.num']) // sanity: target exists
        && $threads[$value.'.num'] != 0   // and is not a return to root
    ){
        $branchestarts[] = $threads[$value.'.num'];
    }
}
echo json_encode($branchestarts);

:

[35,15,46,33,48,47,9,49,50,32]

, 35,49,50 32 , 9 imap, - 2 , .

, , , 1 2 , . , "":

$branches = array();
$currenttree = null;
foreach($threads as $key => $value){
    list($num,$type) = explode('.',$key);
    switch($type){
        case 'num':
            //nothing
            break;
        case 'next':
            if(is_null($currenttree)) $currenttree = &$branches[$threads[$value.'.num']];
            if($value && isset($threads[$value.'.num'])) $currenttree[] = $threads[$value.'.num'];
            break;
        case 'branch':
            unset($currenttree);
            if($value && $threads[$value.'.num']){
                $branches[$threads[$value.'.num']] = array($threads[$value.'.num']);
                $currenttree =& $branches[$threads[$value.'.num']];
            }
    }
}
echo json_encode($branches, JSON_PRETTY_PRINT);

:

{
    "35": [
        35,
        7,
        11,
        39,
        40,
        38,
        12,
        25,
        19,
        23,
        30,
        2,
        20,
        1,
        41,
        27,
        17,
        31,
        4,
        37,
        24,
        13
    ],
    "15": [
        15,
        18,
        45
    ],
    "46": [
        46,
        29,
        26,
        34
    ],
    "33": [
        33,
        36,
        10
    ],
    "48": [
        48
    ],
    "47": [
        47,
        5,
        3,
        21,
        8,
        43,
        28,
        42,
        22
    ],
    "9": [
        9
    ],
    "49": [
        49
    ],
    "50": [
        50
    ],
    "32": [
        32,
        16,
        14,
        6,
        44
    ]
}

:

$branches = array();
$currenttree = null;
$messages = array();
foreach($threads as $key => $value){
    list($num,$type) = explode('.',$key);
    switch($type){
        case 'num':
            //nothing
            break;
        case 'next':
            if(is_null($currenttree)) $currenttree = &$branches[$threads[$value.'.num']];
            if($value && isset($threads[$value.'.num'])) $currenttree[] = &$messages[$threads[$value.'.num']];
            break;
        case 'branch':
            unset($currenttree);
            if($value && $threads[$value.'.num']){
                $branches[$threads[$value.'.num']] = array(&$messages[$threads[$value.'.num']]);
                $currenttree =& $branches[$threads[$value.'.num']];
            } else {
                $currenttree = null;
            }
    }
}
$keystofetch = implode(',',array_filter(array_keys($messages)));
foreach(imap_fetch_overview($imap,$keystofetch,FT_UID) as $message){
        $messages[$message->uid] = $message;
}
echo json_encode($branches);//won't show it output, this answer is to large as it is ;)

- datetime, / , , , , .

" ", , :

 1       2013-06-01
   2     2013-06-02
     3   2013-06-03
   4     2013-06-03
     5   2013-06-04

1,2,3,4,5, 3 :

 1       2013-06-01
   4     2013-06-03
     5   2013-06-04
   2     2013-06-02
     3   2013-06-03
       6 2013-06-05

1,4,5,2,3,6, , / .

0

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