strnatcmp

Beispiel

Beispiel 1

Verwenden Sie den "natürlichen" Algorithmus, um zwei Zeichenfolgen (Fallempfindlichkeit) zu vergleichen:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">Echo</span> <span class="token function">Strnatcmp</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">strnatcmp</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>

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Beispiel 2

Unterschiede zwischen natürlichen Algorithmen (STRNATCMP) und herkömmlichen Computer -String -Sortieralgorithmen (STRCMP):

 <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">Echo</span> <span class="token string double-quoted-string">"Standard String -Vergleich"</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">Echo</span> <span class="token string double-quoted-string">"natürlicher Reihenfolge Stringvergleich"</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>

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