substr_compare

Name:substr_compare

Kategorie:Saite

Programmiersprache:php

Kurzbeschreibung:Vergleichen Sie zwei Zeichenfolgen aus der angegebenen Startposition (binäres und selektives Gehäuseempfindlichkeit).

Beispiel

Beispiel 1

Vergleichen Sie zwei Saiten:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo Welt"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hallo Welt"</span> <span class="token punctuation">,</span> <span class="token number">0</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

Vergleichen Sie zwei Zeichenfolgen, wenn die Startposition für den Vergleich in String1 6 beträgt:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello World"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"World"</span> <span class="token punctuation">,</span> <span class="token number">6</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

Probieren Sie es selbst aus

Beispiel 3

Verwenden Sie alle Parameter:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"welt"</span> <span class="token punctuation">oder</span> <span class="token string double-quoted-string">"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"welt"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"ld"</span> <span class="token punctuation">,</span> <span class="token operator">-</span> <span class="token number">2</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"welt"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"orl"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"welt"</span> <span class="token punctuation">oder</span> <span class="token string double-quoted-string">"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">,</span> <span class="token constant boolean">wahr</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"welt"</span> <span class="token punctuation">oder</span> <span class="token string double-quoted-string">"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">3</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"welt"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"rl"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

Probieren Sie es selbst aus

Beispiel 4

Verschiedene Rückgaberichte:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo Welt!"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hallo Welt!"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// Zwei Saiten sind gleich</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo Welt!"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hallo"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// <i>String1</i> ist größer als <i>String2</i></span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo Welt!"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hallo Welt! Hallo!"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// <i>String1</i> ist weniger als <i>String2</i></span>
<span class="token delimiter important">?></span></span>

Probieren Sie es selbst aus

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