key

Beispiel

Geben Sie den Elementschlüsselnamen aus der aktuellen internen Zeigerposition zurück:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token variable">$ people</span> <span class="token operator">=</span> <span class="token keyword">Array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Bill"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Steve"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Mark"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"David"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token string double-quoted-string">"Die aktuelle Position des Schlüssels ist:"</span> <span class="token operator">.</span><span class="token function"></span></span><mark> <span class="token function">Schlüssel</span> <span class="token punctuation">(</span> <span class="token variable">$ people</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

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