현재 위치: > 함수 카테고리 모음> array_reduce

array_reduce

콜백 함수로 배열을 단일 값으로 반복적으로 단순화합니다.
이름:array_reduce
분류:정렬
사용 언어:php
한 줄 설명:사용자 정의 함수를 사용하여 배열을 문자열로 반환하십시오.

예 1

배열의 값을 사용자 정의 함수로 보내고 문자열을 반환합니다.

 <span class="token php language-php"><span class="token delimiter important"><? php</span>
<span class="token keyword">함수</span> <span class="token function-definition function">myfunction</span> <span class="token punctuation">(</span> <span class="token variable">$ v1</span> <span class="token punctuation">,</span> <span class="token variable">$ v2</span> <span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token keyword">반품</span> <span class="token variable">$ v1</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"-"</span> <span class="token operator">.</span> <span class="token variable">$ v2</span> <span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token variable">$ a</span> <span class="token operator">=</span> <span class="token keyword">배열</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"개"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"고양이"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"말"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">(</span><span class="token function"></span></span><mark> <span class="token function">Array_Reduce</span> <span class="token punctuation">(</span> <span class="token variable">$ a</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"myFunction"</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

직접 시도하십시오

예 2

초기 매개 변수 설정 :

 <span class="token php language-php"><span class="token delimiter important"><? php</span>
<span class="token keyword">함수</span> <span class="token function-definition function">myfunction</span> <span class="token punctuation">(</span> <span class="token variable">$ v1</span> <span class="token punctuation">,</span> <span class="token variable">$ v2</span> <span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token keyword">반품</span> <span class="token variable">$ v1</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"-"</span> <span class="token operator">.</span> <span class="token variable">$ v2</span> <span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token variable">$ a</span> <span class="token operator">=</span> <span class="token keyword">배열</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"개"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"고양이"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"말"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">(</span><span class="token function"></span></span><mark> <span class="token function">Array_reduce</span> <span class="token punctuation">(</span> <span class="token variable">$ a</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"myfunction"</span> <span class="token punctuation">,</span> <span class="token number">5</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

직접 시도하십시오

예 3

합계를 반환합니다.

 <span class="token php language-php"><span class="token delimiter important"><? php</span>
<span class="token keyword">함수</span> <span class="token function-definition function">myfunction</span> <span class="token punctuation">(</span> <span class="token variable">$ v1</span> <span class="token punctuation">,</span> <span class="token variable">$ v2</span> <span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token keyword">반품</span> <span class="token variable">$ v1</span> <span class="token operator">+</span> <span class="token variable">$ v2</span> <span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token variable">$ a</span> <span class="token operator">=</span> <span class="token keyword">배열</span> <span class="token punctuation">(</span> <span class="token number">10</span> <span class="token punctuation">,</span> <span class="token number">15</span> <span class="token punctuation">,</span> <span class="token number">20</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">(</span><span class="token function"></span></span><mark> <span class="token function">Array_reduce</span> <span class="token punctuation">(</span> <span class="token variable">$ a</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"myfunction"</span> <span class="token punctuation">,</span> <span class="token number">5</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

직접 시도하십시오

유사한 함수
  • "천연 정렬"알고리즘을 사용하여 배열을 정렬합니다 natsort

    natsort

    "천연정렬"알고리즘
  • 배열의 각 멤버에 사용자 함수를 재귀 적으로 적용합니다. array_walk_recursive

    array_walk_recursive

    배열의각멤버에사용자함수를재귀적으로적용
  • 배열에서 현재 요소를 반환합니다 current

    current

    배열에서현재요소를반환합니다
  • 배열의 반대 정렬 rsort

    rsort

    배열의반대정렬
  • 콜백 함수를 사용하여 데이터를 비교하여 배열 차이 세트를 계산합니다. array_udiff

    array_udiff

    콜백함수를사용하여데이터를비교하여배열차
  • 키 이름 비교를 사용하여 배열 차이 세트를 계산합니다. array_diff_key

    array_diff_key

    키이름비교를사용하여배열차이세트를계산합
  • 사용자가 제공하는 콜백 함수를 사용하여 배열의 차이 세트를 계산하기 위해 인덱스 점검을 수행하십시오. array_diff_uassoc

    array_diff_uassoc

    사용자가제공하는콜백함수를사용하여배열의
  • 주어진 값으로 배열을 채우십시오 array_fill

    array_fill

    주어진값으로배열을채우십시오