PHP foreach 循环键值

问题描述

我正在运行这个数据库调用来获取多维数组我正在尝试获取每个键的键，但是当我尝试时它出现空白或数组.

I am running this DB call to get me multi-dimensional array I am trying to get the keys of each but when I try it comes up blank or as array.

$root_array = array();
$sites = $this->sites($member_id);
foreach ($sites as $site){
    $records = $this->db->select('p.name as place_name, p.id as place_id,p.active as place_status')
                ->from('places p')
                ->join('members_permissions pm','pm.sites_id = p.sites_id and pm.members_id ='.$member_id)
                ->where('p.active', 0)
                ->get();

    $places = $records->result_array();
    $places['name'] = $site['name'];
    foreach($places as $place){
       $root_array[$site['name']][] = $place;
    }

}
return $root_array;

这是我的 php 循环:

here is my php that loops through:

<?php foreach($places as $site): ?>
    <h5><?=key($site)?></h5>
        <?php foreach($site as $place): ?>
            <h6><?=$place['place_name']?></h6>
        <?php endforeach?>

<?php endforeach ?>

此外，当我运行一个只是吐出数组的测试时，这就是结果，我试图呈现的是[费城]

Also when I run a test which just spits out the array this is the result, What I am trying to render is [Philadelphia]

[Philadelphia] => Array
        (
            [0] => Array
                (
                    [place_name] => XYX
                    [place_id] => 103200
                    [place_status] => 0
                )

            [1] => Array
                (
                [place_name] => YYYY
                [place_id] => 232323
                [place_status] => 0
            )

推荐答案

你可以像这样访问你的数组键:

You can access your array keys like so:

foreach ($array as $key => $value)

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