crc32

例

例1

crc32()の結果を出力します。

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token variable">$ str</span> <span class="token operator">=</span> <span class="token function">crc32</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"shanghai"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token function">printf</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"％u \ n"</span> <span class="token punctuation">、</span> <span class="token variable">$ str</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

この例では、「 %u 」形式の有無にかかわらずcrc32()の結果を出力します（結果は同じであることに注意してください）：

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token variable">$ str</span> <span class="token operator">=</span> <span class="token function">crc32</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"Hello World！"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token string single-quoted-string">％uのない</span><span class="token keyword">エコー</span>： &#39; <span class="token operator">。</span> <span class="token variable">$ str</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token string single-quoted-string">％u： &#39;を持つ</span><span class="token keyword">エコー</span>&#39; <span class="token punctuation">;</span>
<span class="token function">printf</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"％u"</span> <span class="token punctuation">、</span> <span class="token variable">$ str</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token delimiter important">？></span></span>

上記のコードの出力：

 ％uなし：461707669
％u：461707669

例3

この例では、「 %u 」形式の有無にかかわらずcrc32()の結果を出力します（結果は異なることに注意してください）：

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token variable">$ str</span> <span class="token operator">=</span> <span class="token function">crc32</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"hello world。"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token string single-quoted-string">％uのない</span><span class="token keyword">エコー</span>： &#39; <span class="token operator">。</span> <span class="token variable">$ str</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token string single-quoted-string">％u： &#39;を持つ</span><span class="token keyword">エコー</span>&#39; <span class="token punctuation">;</span>
<span class="token function">printf</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"％u"</span> <span class="token punctuation">、</span> <span class="token variable">$ str</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token delimiter important">？></span></span>

上記のコードの出力：

 ％uなし：-1959132156
％u：2335835140