Php 通过数组循环以构建新的数据数组

我在我的站点上有一个通知部分，我正在从我的表中获取数据。可以将子通知分配给其父项，因此表中有父项id，如下所示：

下面是我得到的数组

Array
    (
    [0] => stdClass Object
        (
            [user_title] => Mr
            [user_firstname] => Richard
            [user_lastname] => Knight-Gregson
            [assignee_title] => Mr
            [assignee_firstname] => Richard
            [assignee_lastname] => Knight-Gregson
            [created] => 2015-03-26 11:40:20
            [id] => 61
            [user_id] => 88
            [description] => message for user rkg uid 88
            [assignee] => 88
            [parent_id] => 
            [cc] => 
            [bcc] => 
            [status] => 0
        )

[1] => stdClass Object
    (
        [user_title] => Mr
        [user_firstname] => Richard
        [user_lastname] => Knight-Gregson
        [assignee_title] => Mr
        [assignee_firstname] => Richard
        [assignee_lastname] => Knight-Gregson
        [created] => 2015-03-26 12:45:47
        [id] => 71
        [user_id] => 88
        [description] => This is child
        [assignee] => 88
        [parent_id] => 61
        [cc] => 
        [bcc] => 
        [status] => 0
    )

[2] => stdClass Object
    (
        [user_title] => Mr
        [user_firstname] => Ted
        [user_lastname] => Chiles
        [assignee_title] => Mr
        [assignee_firstname] => Richard
        [assignee_lastname] => Knight-Gregson
        [created] => 2015-03-27 10:11:56
        [id] => 207
        [user_id] => 47
        [description] => cc 88
        [assignee] => 88
        [parent_id] => 
        [cc] => 88
        [bcc] => 112
        [status] => 0
    )

[3] => stdClass Object
    (
        [user_title] => Mr
        [user_firstname] => Richard
        [user_lastname] => Knight-Gregson
        [assignee_title] => Mr
        [assignee_firstname] => Richard
        [assignee_lastname] => Knight-Gregson
        [created] => 2015-03-27 10:17:31
        [id] => 209
        [user_id] => 88
        [description] => sadfasdfasd
        [assignee] => 88
        [parent_id] => 
        [cc] => 88
        [bcc] => 0
        [status] => 0
    )

 )

这是我目前在数组中循环的代码，我需要添加的是获取所有具有父元素id的元素，然后将它们显示在列表中的代表父元素下

<table class="notifications-table" border="1">
        <tr>
            <th>S No.</th><th>Date</th><th>Employee</th><th id="details">Details</th><th>Assignee</th><th>Action</th>
        </tr>

    <?php foreach($notifications as $row){ ?>

        <?php foreach($row as $k){


        } ?>

        <tr <?php if($row->status){ echo "class='resolved'"; } ?> id="row-<?=$row->id;?>">

            <td><?=$row->user_id?></td><td><?=date('d M, H:i',strtotime($row->created));?></td>

            <td><?=$row->user_title.' '.$row->user_firstname.' '.$row->user_lastname;?></td>

            <td>
                row id is : <?=$row->id.' == '.$row->parent_id; ?>
                <?php //echo $row->id.' == '.$row->parent_id; ?>
                <?=$row->description; ?><span data-parent-id="<?=$row->id;?>" data-user-id="<?=$row->user_id;?>" id="add_not" data-featherlight="#send_child_message" data-id="add_child_notification" class="glyphicon glyphicon-plus"></span>

            </td>

            <td><?=$row->assignee_title.' '.$row->assignee_firstname.' '.$row->assignee_lastname;?></td>

            <td><input <?php if($row->status){ echo "disabled"; } ?> value="<?=$row->id;?>" data-action="not" type="checkbox" /></td>

        </tr>

    <?php } ?>

</table>

我尝试了一些事情，但就是不能得到我想要的！ 问候

您的代码似乎是正确的。我能够获取您的大部分结构，并对其进行迭代，得到您在屏幕截图中看到的内容：

我能够看到2行信息，因为我只使用了2个元素，而不是全部

好的，我现在明白你想做什么了。您希望显示父id元素的详细信息—在本例中，该元素将是我的第2行，因为行id 71是行id 61的“子代”

如果我的假设是正确的，那么您需要基于父&子概念将这些元素相互关联

在您的详细信息关闭td之前，您可以添加

<?php foreach($notifications as $row2){ ?>
  <?php if ($row2->id == $row->parent_id) : ?> PARENT DESC: <?= $row2->description; ?><?php endif; ?> 
<?php } ?>

现在，您可以使用它来提取一些父属性值。