bin2hex

实例

例子 1

把 "Shanghai" 转换为十六进制值：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token function">bin2hex</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Shanghai"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span><span class="token punctuation">(</span><span class="token variable">$str</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

把一个字符串值从二进制转换为十六进制，再转换回去：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Shanghai"</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">bin2hex</span><span class="token punctuation">(</span><span class="token variable">$str</span><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">echo</span> <span class="token function">pack</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"H*"</span><span class="token punctuation">,</span><span class="token function">bin2hex</span><span class="token punctuation">(</span><span class="token variable">$str</span><span class="token punctuation">)</span><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 delimiter important">?></span></span>

亲自试一试