strnatcasecmp

名前:strnatcasecmp

カテゴリ:弦

対応言語:php

一言説明:「自然な並べ替え」アルゴリズムを使用して、2つの文字列（ケース非感受性）を比較します。

例

例1

「ナチュラル」アルゴリズムを使用して、2つの文字列を比較します（ケースの鈍感）：

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token keyword">Echo</span> <span class="token function">strnatcasecmp</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"2hello world！"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"10hello world！"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">strnatcasecmp</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"10hello world！"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"2hello world！"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token delimiter important">？></span></span>

自分で試してみてください

例2

自然アルゴリズム（STRNATCMP）と従来のコンピューター文字列ソートアルゴリズム（STRCMP）の違い：

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token variable">$ arr1</span> <span class="token operator">=</span> <span class="token variable">$ arr2</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"pic1"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"pic2"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"pic10"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"pic01"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"pic100"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"pic20"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"pic30"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"pic200"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token keyword">エコー</span><span class="token string double-quoted-string">「標準文字列比較」</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token function">USORT</span> <span class="token punctuation">（</span> <span class="token variable">$ arr1</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"strcmp"</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 variable">$ arr1</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>

<span class="token keyword">エコー</span><span class="token string double-quoted-string">「ナチュラルオーダーストリングの比較」</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token function">usort</span> <span class="token punctuation">（</span> <span class="token variable">$ arr2</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"strnatcmp"</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 variable">$ arr2</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token delimiter important">？></span></span>

自分で試してみてください