array_walk_recursive

例

配列内の各要素にユーザー定義の関数を適用します。

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token keyword">機能</span><span class="token function-definition function">myfunction</span> <span class="token punctuation">（</span> <span class="token variable">$ value</span> <span class="token punctuation">、</span> <span class="token variable">$ key</span> <span class="token punctuation">）</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"キー<span class="token interpolation"><span class="token variable">$キー</span></span>の値は<span class="token interpolation"><span class="token variable">$ value</span></span> 。<br>"</span> <span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token variable">$ a1</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"a"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"red"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"b"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"緑"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token variable">$ a2</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">（</span> <span class="token variable">$ a1</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"1"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"blue"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"2"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"Yellow"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token function"></span></span><mark><span class="token function">array_walk_recursive</span> <span class="token punctuation">（</span> <span class="token variable">$ a2</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"myfunction"</span> <span class="token punctuation">）</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>
<span class="token delimiter important">？></span>

自分で試してみてください