array_search

Name:array_search

Kategorie:Array

Programmiersprache:php

Kurzbeschreibung:Sucht nach dem angegebenen Wert im Array und gibt den Schlüsselnamen zurück.

Beispiel

Beispiel 1

Suchen Sie nach dem Schlüsselwert "rot" im Array und geben Sie seinen Schlüsselnamen zurück:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token variable">$ a</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"a"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"rot"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"b"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"grün"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"blau"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span><span class="token function"></span></span><mark> <span class="token function">Array_search</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"rot"</span> <span class="token punctuation">,</span> <span class="token variable">$ a</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

Probieren Sie es selbst aus

Beispiel 2

Suchen Sie nach dem Schlüsselwert 5 im Array und geben Sie seinen Schlüsselnamen zurück (Hinweis ""):

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token variable">$ a</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"a"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"5"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"b"</span> <span class="token operator">=></span> <span class="token number">5</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"5"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span><span class="token function"></span></span><mark> <span class="token function">Array_search</span> <span class="token punctuation">(</span> <span class="token number">5</span> <span class="token punctuation">,</span> <span class="token variable">$ a</span> <span class="token punctuation">,</span> <span class="token constant boolean">true</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

Probieren Sie es selbst aus

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