crc32

Exemple

Exemple 1

Sortie le résultat de crc32() :

 <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>

Essayez-le vous-même

Exemple 2

Dans cet exemple, nous sortions le résultat de crc32() avec et sans le format " %u " (notez que le résultat est le même):

 <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 keyword">écho</span> <span class="token string single-quoted-string">&#39;sans% u:&#39;</span> <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 keyword">écho</span> <span class="token string single-quoted-string">&#39;avec% u:&#39;</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"</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>

Sortie du code ci-dessus:

 Sans% u: 461707669
Avec% u: 461707669

Exemple 3

Dans cet exemple, nous sortira le résultat de crc32() avec et sans le format " %u " (notez que les résultats sont différents):

 <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 keyword">écho</span> <span class="token string single-quoted-string">&#39;sans% u:&#39;</span> <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 keyword">écho</span> <span class="token string single-quoted-string">&#39;avec% u:&#39;</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"</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>

Sortie du code ci-dessus:

 Sans% u: -1959132156
Avec% u: 2335835140