shigemk2 https://blog.hatena.ne.jp/shigemk2/ by shigemk2 https://www.shigemk2.com/ PHP array_keysそのものについてはこちらを参照のこと。 PHP: array_keys - Manual連想配列をarray_keysしてみると… <?php $hash = array( '1'=>'one', '2'=>'two', '3'=>'three', ); $array = array_keys($hash); print_r($array); Array ( [0] => 1 [1] => 2 [2] => 3 )まあこうなるよね。では、多次元配列ではどうなるのだろうか。 <?php $hash2 = array(); $hash2['hoge']['foo'] = 1; … 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F20121002%2F1349170390" title="多次元配列におけるarray_keys - by shigemk2" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2012-10-02 18:33:10 rich https://www.shigemk2.com/entry/20121002/1349170390 1.0 100%