extract

名前:extract

カテゴリ:配列

対応言語:php

一言説明:アレイから現在のシンボルテーブルに変数をインポートします。

例

例1

キー値「cat」、「犬」、「馬」を変数$ a、$ b、$ cに割り当てます。

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token variable">$ a</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"original"</span> <span class="token punctuation">;</span>
<span class="token variable">$ my_array</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">"cat"</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">"dog"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"horse"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token function"></span></span><mark><span class="token function">抽出</span><span class="token punctuation">（</span> <span class="token variable">$ my_array</span> <span class="token punctuation">）</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"\ $ a = <span class="token interpolation"><span class="token variable">$ a</span></span> ; \ $ b = <span class="token interpolation"><span class="token variable">$ b</span></span> ; \ $ c = <span class="token interpolation"><span class="token variable">$ c</span></span> "</span> <span class="token punctuation">;</span>
<span class="token delimiter important">？></span>

自分で試してみてください

例2

すべてのパラメーターを使用します：

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token variable">$ a</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"original"</span> <span class="token punctuation">;</span>
<span class="token variable">$ my_array</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">"cat"</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">"dog"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"horse"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>

<span class="token function"></span></span><mark><span class="token function">抽出</span><span class="token punctuation">（</span> <span class="token variable">$ my_array</span> <span class="token punctuation">、</span> <span class="token constant">extr_prefix_same</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"dup"</span> <span class="token punctuation">）</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>

<span class="token keyword">echo</span> <span class="token string double-quoted-string">"\ $ a = <span class="token interpolation"><span class="token variable">$ a</span></span> ; \ $ b = <span class="token interpolation"><span class="token variable">$ b</span></span> ; \ $ c = <span class="token interpolation"><span class="token variable">$ c</span></span> ; \ $ dup_a = <span class="token interpolation"><span class="token variable">$ dup_a</span></span> "</span> <span class="token punctuation">;</span>
<span class="token delimiter important">？></span>

自分で試してみてください