在 PHP7 中,在数组中创建子数组,其中两个键在两个元素中具有相同的值

问题描述 投票:0回答:2

我正在尝试采用这样的数组:

Array
(
    [0] => Array
    (
        [model_id] => 1
        [member_id] => 25
        [comment_text] => Me feel good about this
        [created_on] => 2020-12-26 10:02:58.205335
        [comment_id] => 89dab457-cff2-4ae4-9251-48e4f9c7bc63
        [event_id] => 3112f8ff-6119-48c4-810c-594585b5dc63
        [model_name] => STL_friend
        [member_name] => zeus_the_god
        [comment_parent] => d0e92ab1-5867-4ca4-952e-8ca4424982ea
        [original_date] => 2020-12-25 15:09:28.403925
        [cmt_names] =>
        [row_likes] => 0
        [date_check] => 2020-12-25 15:09:28.403925
    )
    
    [1] => Array
    (
        [model_id] => 1
        [member_id] => 25
        [comment_text] => Oh YES YES YES
        [created_on] => 2020-12-25 15:09:28.403925
        [comment_id] => d0e92ab1-5867-4ca4-952e-8ca4424982ea
        [event_id] => 3112f8ff-6119-48c4-810c-594585b5dc63
        [model_name] => STL_friend
        [member_name] => zeus_the_god
        [comment_parent] =>
        [original_date] =>
        [cmt_names] => dean.manner
        [row_likes] => 1
        [date_check] => 2020-12-25 15:09:28.403925
    )
    
    [2] => Array
    (
        [model_id] => 1
        [member_id] => 25
        [comment_text] => @spiffy_kid  - We can do that
        [created_on] => 2020-12-25 15:17:53.572503
        [comment_id] => 395cac7c-ea28-491b-92c7-3d0b8444a78f
        [event_id] => 3112f8ff-6119-48c4-810c-594585b5dc63
        [model_name] => STL_friend
        [member_name] => zeus_the_god
        [comment_parent] => 7b89e577-1e8f-4c24-bb83-48aa0f9e3a25
        [original_date] => 2020-12-25 15:12:15.54293
        [cmt_names] =>
        [row_likes] => 0
        [date_check] => 2020-12-25 15:12:15.54293
    )
    
    [3] => Array
    (
        [model_id] => 1
        [member_id] => 17
        [comment_text] => Let's do this fast and quick
        [created_on] => 2020-12-25 15:16:59.806941
        [comment_id] => 42c5a5f0-ac3e-4c28-b633-37e014d27977
        [event_id] => 3112f8ff-6119-48c4-810c-594585b5dc63
        [model_name] => STL_friend
        [member_name] => spiffy_friend
        [comment_parent] => 7b89e577-1e8f-4c24-bb83-48aa0f9e3a25
        [original_date] => 2020-12-25 15:12:15.54293
        [cmt_names] =>
        [row_likes] => 0
        [date_check] => 2020-12-25 15:12:15.54293
    )
    
    [4] => Array
    (
        [model_id] => 1
        [member_id] => 18
        [comment_text] => How you doing?
        [created_on] => 2020-12-25 15:12:15.54293
        [comment_id] => 7b89e577-1e8f-4c24-bb83-48aa0f9e3a25
        [event_id] => 3112f8ff-6119-48c4-810c-594585b5dc63
        [model_name] => STL_friend
        [member_name] => dean.manner
        [comment_parent] =>
        [original_date] =>
        [cmt_names] =>
        [row_likes] => 0
        [date_check] => 2020-12-25 15:12:15.54293
    )

)

并使其看起来像这样:

Array (
    [0] => Array (
        [model_id] => 1
        [member_id] => 25
        [comment_text] => Oh YES YES YES
        [created_on] => 2020-12-25 15:09:28.403925
        [comment_id] => d0e92ab1-5867-4ca4-952e-8ca4424982ea
        [event_id] => 3112f8ff-6119-48c4-810c-594585b5dc63
        [model_name] => STL_friend
        [member_name] => zeus_the_god
        [comment_parent] =>
        [original_date] =>
        [cmt_names] => dean.manner
        [row_likes] => 1
        [date_check] => 2020-12-25 15:09:28.403925
        [cmt_reply] => Array (
            [0] => Array (
                [model_id] => 1
                [member_id] => 25
                [comment_text] => Me feel good about this
                [created_on] => 2020-12-26 10:02:58.205335
                [comment_id] => 89dab457-cff2-4ae4-9251-48e4f9c7bc63
                [event_id] => 3112f8ff-6119-48c4-810c-594585b5dc63
                [model_name] => STL_friend
                [member_name] => zeus_the_god
                [comment_parent] => d0e92ab1-5867-4ca4-952e-8ca4424982ea
                [original_date] => 2020-12-25 15:09:28.403925
                [cmt_names] =>
                [row_likes] => 0
                [date_check] => 2020-12-25 15:09:28.403925
            )
        )
    )
    [1] => Array (
        [model_id] => 1
        [member_id] => 18
        [comment_text] => How you doing?
        [created_on] => 2020-12-25 15:12:15.54293
        [comment_id] => 7b89e577-1e8f-4c24-bb83-48aa0f9e3a25
        [event_id] => 3112f8ff-6119-48c4-810c-594585b5dc63
        [model_name] => STL_friend
        [member_name] => dean.manner
        [comment_parent] =>
        [original_date] =>
        [cmt_names] =>
        [row_likes] => 0
        [date_check] => 2020-12-25 15:12:15.54293
        [cmt_reply] => Array (
            [0] => Array (
                [model_id] => 1
                [member_id] => 17
                [comment_text] => Let\\\'s do this fast and quick
                [created_on] => 2020-12-25 15:16:59.806941
                [comment_id] => 42c5a5f0-ac3e-4c28-b633-37e014d27977
                [event_id] => 3112f8ff-6119-48c4-810c-594585b5dc63
                [model_name] => STL_friend
                [member_name] => spiffy_friend
                [comment_parent] => 7b89e577-1e8f-4c24-bb83-48aa0f9e3a25
                [original_date] => 2020-12-25 15:12:15.54293
                [cmt_names] =>
                [row_likes] => 0
                [date_check] => 2020-12-25 15:12:15.54293
            )
                [1] => Array (
                [model_id] => 1
                [member_id] => 25
                [comment_text] => @spiffy_kid - We can do that
                [created_on] => 2020-12-25 15:17:53.572503
                [comment_id] => 395cac7c-ea28-491b-92c7-3d0b8444a78f
                [event_id] => 3112f8ff-6119-48c4-810c-594585b5dc63
                [model_name] => STL_friend
                [member_name] => zeus_the_god
                [comment_parent] => 7b89e577-1e8f-4c24-bb83-48aa0f9e3a25
                [original_date] => 2020-12-25 15:12:15.54293
                [cmt_names] =>
                [row_likes] => 0
                [date_check] => 2020-12-25 15:12:15.54293
            )
        )
    )
)

但我无法到达那里。我非常接近,但它不存在。 该函数需要识别所有数组元素,其中

[comment_parent]
的值 === 另一个元素中
[comment_id]
的值。如果它们匹配,则具有
[comment_parent]
的元素将成为具有匹配
[comment_id]
的元素的子数组。

但我无法到达那里。我非常接近,但它不在那里。

尝试一:

foreach ($qrtn as $key => $val){
    $cmt = $val['comment_id'];
    $prt = $val['comment_parent'];
    foreach ($qrtn as $keyed => $value) {
        $cmt2 = $value['comment_id'];
        $prt2 = $value['comment_parent'];
        echo "$cmt === $prt2\n";
        if ($cmt === $prt2) {
            $qrtn[$key]['subcmt'-1] = $value;
            unset($qrtn[$key]);
        }
    }
}

尝试二:

$arrCmts = array_diff_assoc(array_column($qrtn, 'comment_id'), array_column($qrtn, 'comment_parent'));
$arrCmt1 = [];
    array_walk($arrCmts, function ($itemed, $keyed) use (&$qrtn, &$arrCmt1) {
    foreach ($qrtn as $key1 => $val) {
        $cmtItm2 = $val['comment_id'];
        $prtItm2 = $val['comment_parent'];
        if ($prtItm2 === $itemed) {
            $qrtn[$key1-1]['subcmts'] = $val;
            unset($qrtn[$key1]);
        }
    }
});

我错过了什么??

multidimensional-array php-7 sub-array
2个回答
0
投票

明白了。

$arrInt = array_diff_assoc(array_column($qrtn, 'comment_id'), array_column($qrtn, 'comment_parent'));
$arrCmts = array_diff_assoc(array_column($qrtn, 'comment_parent'), array_column($qrtn, 'comment_id'));
$arrCpr4 = array_intersect($arrInt, $arrCmts);
$arrCpr2 = array_diff($arrInt, $arrCmts);
   foreach ($qrtn as $key1 => $val) {

    $cmtItm2 = $val['comment_id'];
    $prtItm2 = $val['comment_parent'];

    $arCmt2 = array_search($prtItm2, $arrCpr4);
    if (in_array($prtItm2, $arrCpr4)) {
        $arCmt3 = array_search($cmtItm2, $arrCpr2);
        $qrtn[$arCmt2]['subcmts'][$ss] = $val;
        $ss++;
        unset($qrtn[$arCmt3]);
    }
}

0
投票

您可以通过声明对每个父条目的引用并将所有子条目推送到其各自的父引用中,在输入数组的单次传递中将条目嵌套到父子关系中。然后,遇到的任何子条目都可以从输入数组中删除,因为它将被移动到父条目中的正确位置。

这种方法的优点在于,如果在其第一个子级之前遇到父级,或者在其父级之前遇到第一个子级,这并不重要。参考文献确保一切都移动到正确的位置。

代码:(演示

foreach ($array as $i => &$row) {
    if ($row['comment_parent']) {  // is a child
        $commentsRef[$row['comment_parent']][] =& $row; // push child into reference
        unset($array[$i]);  // remove child from (first level) of the original array
    } else {  // is a parent
        $commentsRef[$row['comment_id']] ??= [];  // ensure there is an array to reference
        $row['cmt_reply'] =& $commentsRef[$row['comment_id']];  // assign reference
    }
}
var_export($array);
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