array_splice

例

例1

配列から要素を削除し、新しい要素に置き換えます。

 <span class="token php language-php"><span class="token delimiter important"><？php</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">"green"</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">"blue"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"d"</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 variable">$ a2</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">"purple"</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">"orange"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token function"></span></span><mark><span class="token function">array_splice</span> <span class="token punctuation">（</span> <span class="token variable">$</span> <span class="token punctuation">a1、0、2</span> <span class="token punctuation">、</span> <span class="token variable">$</span> <span class="token number">a2</span> <span class="token punctuation">）</span><span class="token number">​</span><span class="token punctuation">​</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">（</span> <span class="token variable">$ a1</span> <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

例2

このページの前のセクションの例と同じですが、返された配列を出力します。

 <span class="token php language-php"><span class="token delimiter important"><？php</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">"green"</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">"blue"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"d"</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 variable">$ a2</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">"purple"</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">"orange"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">（</span><span class="token function"></span></span><mark> <span class="token function">array_splice</span> <span class="token punctuation">（</span> <span class="token variable">$</span> <span class="token punctuation">a1、0、2</span> <span class="token punctuation">、</span> <span class="token variable">$</span> <span class="token number">a2</span> <span class="token punctuation">）</span><span class="token number">​</span><span class="token punctuation">​</span></mark><span class="token punctuation"></span> <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

例3

長さパラメーターを0に設定します。

 <span class="token php language-php"><span class="token delimiter important"><？php</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">"0"</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">"1"</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 string double-quoted-string">"0"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"purple"</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">"orange"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token function"></span></span><mark><span class="token function">array_splice</span> <span class="token punctuation">（</span> <span class="token variable">$</span> <span class="token punctuation">a1、1、0</span> <span class="token punctuation">、</span> <span class="token number">$</span> <span class="token variable">a2</span> <span class="token punctuation">）</span><span class="token number">​</span><span class="token punctuation">​</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">（</span> <span class="token variable">$ a1</span> <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