array_sum

例

例1

配列内のすべての値の合計（5+15+25）を返します。

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token variable">$</span> <span class="token punctuation">a</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">（</span> <span class="token number">5、15、25</span> <span class="token punctuation">）</span> <span class="token number">;</span><span class="token punctuation">​</span><span class="token number">​</span><span class="token punctuation">​</span>
<span class="token keyword">エコー</span><span class="token function"></span></span><mark><span class="token function">array_sum</span> <span class="token punctuation">（</span> <span class="token variable">$ a</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

例2

配列内のすべての値の合計（52.2+13.7+0.9）を返します。

 <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 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 number">52.2</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"b"</span> <span class="token operator">=></span> <span class="token number">13.7</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token number">0.9</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token keyword">エコー</span><span class="token function"></span></span><mark><span class="token function">array_sum</span> <span class="token punctuation">（</span> <span class="token variable">$ a</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