array_reverse

名称:array_reverse

分类:数组

所属语言:php

一句话介绍:以相反的顺序返回数组。

实例

例子 1

以相反的元素顺序返回数组：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$a</span><span class="token operator">=</span><span class="token keyword">array</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"a"</span><span class="token operator">=></span><span class="token string double-quoted-string">"Volvo"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"b"</span><span class="token operator">=></span><span class="token string double-quoted-string">"BMW"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"c"</span><span class="token operator">=></span><span class="token string double-quoted-string">"Toyota"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">print_r</span><span class="token punctuation">(</span><span class="token function"></span><mark><span class="token function">array_reverse</span><span class="token punctuation">(</span><span class="token variable">$a</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></span>

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例子 2

返回原始数组、反转数组、保留原始数组键名的翻转数组：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$a</span><span class="token operator">=</span><span class="token keyword">array</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Volvo"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"XC90"</span><span class="token punctuation">,</span><span class="token keyword">array</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"BMW"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"Toyota"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token variable">$reverse</span><span class="token operator">=</span><span class="token function">array_reverse</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token variable">$preserve</span><span class="token operator">=</span><span class="token function"></span><mark><span class="token function">array_reverse</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">,</span><span class="token constant boolean">true</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">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">print_r</span><span class="token punctuation">(</span><span class="token variable">$reverse</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 variable">$preserve</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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