key

예

현재 내부 포인터 위치에서 요소 키 이름을 반환합니다.

 <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">에코</span> <span class="token string double-quoted-string">"키의 현재 위치는 :"입니다</span> <span class="token operator">.</span><span class="token function"></span></span><mark> <span class="token function">키</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>

직접 시도하십시오