如何从数组的所有索引中获取特定值

我有一个数组, 我想对其进行迭代以将项目推入选择框, 但是我不知道该怎么做。
我从函数得到的数组:

array(2) { ["de"]=> array(10) { ["id"]=> int(10) ["order"]=> int(1) ["slug"]=> string(2) "de" ["locale"]=> string(5) "de-DE" ["name"]=> string(7) "Deutsch" ["url"]=> string(34) "http://localhost/werk/Mol/de/haus/" ["flag"]=> string(66) "http://localhost/werk/Mol/wp-content/plugins/polylang/flags/de.png" ["current_lang"]=> bool(false) ["no_translation"]=> bool(false) ["classes"]=> array(4) { [0]=> string(9) "lang-item" [1]=> string(12) "lang-item-10" [2]=> string(12) "lang-item-de" [3]=> string(15) "lang-item-first" } } ["nl"]=> array(10) { ["id"]=> int(3) ["order"]=> int(2) ["slug"]=> string(2) "nl" ["locale"]=> string(5) "nl-NL" ["name"]=> string(10) "Nederlands" ["url"]=> string(26) "http://localhost/werk/Mol/" ["flag"]=> string(66) "http://localhost/werk/Mol/wp-content/plugins/polylang/flags/nl.png" ["current_lang"]=> bool(true) ["no_translation"]=> bool(false) ["classes"]=> array(4) { [0]=> string(9) "lang-item" [1]=> string(11) "lang-item-3" [2]=> string(12) "lang-item-nl" [3]=> string(12) "current-lang" } } }

我尝试了一个foreach但我只得到了数组的索引
< ?php $translations = pll_the_languages(array('raw' => 1)); $lang_codes = array(); foreach ($translations as $key => $value) { array_push($lang_codes, $key); }?>

我需要该数组(de&nl)中所有索引的语言段, URL和标志, 我该怎么办?
#1在外部数组上进行简单的迭代, 然后从子数组中选择所需的值。
< ?php $translations = pll_the_languages(array('raw' => 1)); $lang_codes = array(); foreach ($translations as $lang => $info) {$lang_codes[$lang] = ['slug' => $info['slug'], 'url' => $info['url'], 'flag' => $info['flag'] ]; } ?>

#2你可以这样处理
$res = []; foreach($translations as $key=> $value){ $res[$key] = [ 'slug' => $value['slug'], 'url'=> $value['url'], 'flag' => $value['flag'] ]; }

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