base_convert

名称:base_convert

分类:数学

所属语言:php

一句话介绍:在任意进制之间转换数字。

实例

例子 1

将十六进制数转换为八进制数：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$hex</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"E196"</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">base_convert</span><span class="token punctuation">(</span><span class="token variable">$hex</span><span class="token punctuation">,</span><span class="token number">16</span><span class="token punctuation">,</span><span class="token number">8</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

把八进制数转换为十进制数：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$oct</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"0031"</span><span class="token punctuation">;</span>
<span class="token variable">$dec</span> <span class="token operator">=</span> <span class="token function">base_convert</span><span class="token punctuation">(</span><span class="token variable">$oct</span><span class="token punctuation">,</span><span class="token number">8</span><span class="token punctuation">,</span><span class="token number">10</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"八进制的 <span class="token interpolation"><span class="token variable">$oct</span></span> 等于十进制的 <span class="token interpolation"><span class="token variable">$dec</span></span>。"</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试

例子 3

把八进制数转换为十六进制数：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$oct</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"364"</span><span class="token punctuation">;</span>
<span class="token variable">$hex</span> <span class="token operator">=</span> <span class="token function">base_convert</span><span class="token punctuation">(</span><span class="token variable">$oct</span><span class="token punctuation">,</span><span class="token number">8</span><span class="token punctuation">,</span><span class="token number">16</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"八进制的 <span class="token interpolation"><span class="token variable">$oct</span></span> 等于十六进制的 <span class="token interpolation"><span class="token variable">$hex</span></span>。"</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试