PHP中如何从关联数组的内键中获取值

How to access the values from inner key of associative array in PHP?

本文关键字：获取关联 PHP 数组 | 更新日期: 2023-09-27

以下是一个名为$form_data的多维数组:

Array
(
    [form_submitted] => yes
    [teacher_id] => 3807f31f8c4357bbb56662047529dcde
    [cs_map_ids] => Array
        (
            [0] => 144
            [1] => 130
            [2] => 131
            [3] => 67
            [4] => 89
        )
    [btn_submit] => Done
)

我只想使用foreach循环访问键[cs_map_ids]的值。但无法访问数组[cs_map_ids]内的值。谁能帮助我，我应该如何访问这些值一个一个使用foreach循环?

foreach($form_data['cs_map_ids'] as $map_id)
{
    echo $map_id;
}

foreach ($form_data['cs_map_ids'] as $d) echo "$d<br />";