sizeof

이름:sizeof

분류:정렬

사용 언어:php

한 줄 설명:count ()에 대한 별칭.

예

예 1

배열의 요소 수를 반환합니다.

 <span class="token php language-php"><span class="token delimiter important"><? php</span>
<span class="token variable">$ cars</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Volvo"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"bmw"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Toyota"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword"></span></span><mark><span class="token keyword">Echo</span> <span class="token function">Sizeof</span> <span class="token punctuation">(</span> <span class="token variable">$ 자동차</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

예 2

배열의 요소 수를 재귀 적으로 계산합니다.

 <span class="token php language-php"><span class="token delimiter important"><? php</span>
<span class="token variable">$ cars</span> <span class="token operator">=</span> <span class="token keyword">배열</span>
  <span class="token punctuation">(</span>
  <span class="token string double-quoted-string">"볼보"</span> <span class="token operator">=></span> <span class="token keyword">배열</span>
  <span class="token punctuation">(</span>
  <span class="token string double-quoted-string">"XC60"</span> <span class="token punctuation">,</span>
  <span class="token string double-quoted-string">"XC90"</span>
  <span class="token punctuation">)</span> <span class="token punctuation">,</span> )
  <span class="token string double-quoted-string">"bmw"</span> <span class="token operator">=></span> <span class="token keyword">배열</span>
  <span class="token punctuation">(</span>
  <span class="token string double-quoted-string">"x3"</span> <span class="token punctuation">,</span>
  <span class="token string double-quoted-string">"x5"</span>
  <span class="token punctuation">)</span> <span class="token punctuation">,</span> )
  <span class="token string double-quoted-string">"Toyota"</span> <span class="token operator">=></span> <span class="token keyword">배열</span>
  <span class="token punctuation">(</span>
  <span class="token string double-quoted-string">"하이랜더"</span>
  <span class="token punctuation">))</span>
  <span class="token punctuation">)</span> <span class="token punctuation">;</span>

<span class="token keyword">에코</span> <span class="token string double-quoted-string">"일반 수 :"</span> <span class="token operator">.</span><span class="token function"></span></span><mark> <span class="token function">크기</span> <span class="token punctuation">(</span> <span class="token variable">$ cars</span> <span class="token punctuation">)</span></mark><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">에코</span> <span class="token string double-quoted-string">"재귀 계산 :"</span> <span class="token operator">.</span><span class="token function"></span><mark> <span class="token function">크기</span> <span class="token punctuation">(</span> <span class="token variable">$ Cars</span> <span class="token punctuation">,</span> <span class="token number">1</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