substr

Name:substr

Kategorie:Saite

Programmiersprache:php

Kurzbeschreibung:Gibt einen Teil der Zeichenfolge zurück.

Beispiel

Beispiel 1

Rückkehr "Welt" aus der String:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">echo</span> <span class="token function">substr</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">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 2

Verwenden Sie Startparameter mit unterschiedlichen positiven und negativen Zahlen:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">echo</span> <span class="token function">substr</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">10</span> <span class="token punctuation">)</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 function">substr</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">1</span> <span class="token punctuation">)</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 function">Substr</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">3</span> <span class="token punctuation">)</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 function">Substr</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">7</span> <span class="token punctuation">)</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 function">substr</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo Welt"</span> <span class="token punctuation">,</span> <span class="token operator">-</span> <span class="token number">1</span> <span class="token punctuation">)</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 function">substr</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo Welt"</span> <span class="token punctuation">,</span> <span class="token operator">-</span> <span class="token number">10</span> <span class="token punctuation">)</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 function">substr</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo Welt"</span> <span class="token punctuation">,</span> <span class="token operator">-</span> <span class="token number">8</span> <span class="token punctuation">)</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 function">substr</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo Welt"</span> <span class="token punctuation">,</span> <span class="token operator">-</span> <span class="token number">4</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

Probieren Sie es selbst aus

Beispiel 3

Verwenden Sie Start- und Längenparameter mit unterschiedlichen positiven und negativen Zahlen:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">Echo</span> <span class="token function">Substr</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 number">10</span> <span class="token punctuation">)</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 function">Substr</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello World"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">8</span> <span class="token punctuation">)</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 function">Substr</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 number">5</span> <span class="token punctuation">)</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 function">Substr</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello World"</span> <span class="token punctuation">,</span> <span class="token number">6</span> <span class="token punctuation">,</span> <span class="token number">6</span> <span class="token punctuation">)</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 function">substr</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 operator">-</span> <span class="token number">1</span> <span class="token punctuation">)</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 function">substr</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo Welt"</span> <span class="token punctuation">,</span> <span class="token operator">-</span> <span class="token number">10</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 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 function">Substr</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello World"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">,</span> <span class="token operator">-</span> <span class="token number">6</span> <span class="token punctuation">)</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 function">substr</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo Welt"</span> <span class="token punctuation">,</span> <span class="token operator">-</span> <span class="token number">2</span> <span class="token operator">-</span> <span class="token number">3</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

Probieren Sie es selbst aus

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