rsort

例

例1

Array $ carsの要素を降順で並べ替える：

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token variable">$ cars</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"volvo"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"bmw"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"トヨタ"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token function"></span></span><mark><span class="token function">rsort</span> <span class="token punctuation">（</span> <span class="token variable">$ cars</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

Array $番号で要素を並べ替えます順序で数字で並べ替えます：

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token punctuation">$</span> <span class="token variable">numbers</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">（</span> <span class="token number">4、6、2、22、11</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span><span class="token number">​</span><span class="token number">​</span><span class="token number">​</span><span class="token punctuation">​</span><span class="token number">​</span><span class="token punctuation">​</span><span class="token punctuation">​</span>
<span class="token function"></span></span><mark><span class="token function">rsort</span> <span class="token punctuation">（</span> <span class="token variable">$ numbers</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3

アイテムを数字として比較し、配列$車の要素を降順で並べ替えます。

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token variable">$ cars</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"volvo"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"bmw"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"トヨタ"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token function"></span></span><mark><span class="token function">rsort</span> <span class="token punctuation">（</span> <span class="token variable">$ cars</span> <span class="token punctuation">、</span> <span class="token constant">sort_numeric</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