crc32

Beispiel

Beispiel 1

Ausgabe des Ergebniss von 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>

Probieren Sie es selbst aus

Beispiel 2

In diesem Beispiel geben wir das Ergebnis von crc32() mit und ohne das Format " %u " aus (beachten Sie, dass das Ergebnis gleich ist):

 <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">"Hallo Welt!"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string single-quoted-string">&#39;ohne %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">echo</span> <span class="token string single-quoted-string">&#39;mit %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>

Ausgabe des obigen Codes:

 Ohne %u: 461707669
Mit %u: 461707669

Beispiel 3

In diesem Beispiel werden wir das Ergebnis von crc32() mit und ohne das Format " %u " ausgeben (Beachten Sie, dass die Ergebnisse unterschiedlich sind):

 <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">"Hallo Welt"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string single-quoted-string">&#39;ohne %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">echo</span> <span class="token string single-quoted-string">&#39;mit %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>

Ausgabe des obigen Codes:

 Ohne %u: -1959132156
Mit %u: 2335835140