shuffle

名称:shuffle

分类:数组

所属语言:php

一句话介绍:将数组打乱。

实例

例子 1

把数组中的元素按随机顺序重新排序：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$my_array</span> <span class="token operator">=</span> <span class="token keyword">array</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"red"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"green"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"blue"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"yellow"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"purple"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token function"></span><mark><span class="token function">shuffle</span><span class="token punctuation">(</span><span class="token variable">$my_array</span><span class="token punctuation">)</span></mark><span class="token punctuation"></span><span class="token punctuation">;</span>
<span class="token function">print_r</span><span class="token punctuation">(</span><span class="token variable">$my_array</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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例子 2

把数组中的元素按随机顺序重新排列：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$my_array</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">"red"</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">"green"</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">"blue"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"d"</span><span class="token operator">=></span><span class="token string double-quoted-string">"yellow"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"e"</span><span class="token operator">=></span><span class="token string double-quoted-string">"purple"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token function"></span><mark><span class="token function">shuffle</span><span class="token punctuation">(</span><span class="token variable">$my_array</span><span class="token punctuation">)</span></mark><span class="token punctuation"></span><span class="token punctuation">;</span>
<span class="token function">print_r</span><span class="token punctuation">(</span><span class="token variable">$my_array</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试