如何内爆多维数组

Question

I'm trying to implode this array:

$name;
foreach ($childs as  $cval) {
  $name[] = $cval;
}

And here is what I got:

Array
(
[0] => Array
    (
        [0] => Array
            (
                [pages_name] => services child 1
            )

        [1] => Array
            (
                [pages_name] => services child 2
            )

    )

[1] => Array
    (
        [0] => Array
            (
                [pages_name] => inner service child 1
            )

        [1] => Array
            (
                [pages_name] => inner service child 2
            )

    )

[2] => Array
    (
        [0] => Array
            (
                [pages_name] => gallery child 1
            )

        [1] => Array
            (
                [pages_name] => gallery child 2
            )

    )

)

I'm doing this with array_map like this:

$arr = array_map(function($el){ return $el['pages_name']; }, $name);

$str = implode(',', $arr);

And I got this error:

Undefined index: pages_name

Answer 1

您忘记了深度级别，请尝试以下操作：

$arr = array_map(function($el){ return $el[0]['pages_name']; }, $name);