inet_ntop

实例

将打包地址转换为可读格式：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$addr</span> <span class="token operator">=</span> <span class="token function">chr</span><span class="token punctuation">(</span><span class="token number">127</span><span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token function">chr</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token function">chr</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token function">chr</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token variable">$exp</span> <span class="token operator">=</span> <span class="token function">inet_ntop</span><span class="token punctuation">(</span><span class="token variable">$addr</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token variable">$exp</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试

例子解释

$addr 是由四个字符构成的字符串，它们分别代表了一个 32 位 IPv4 地址的四个字节（在这里是 127.0.1.1）。inet_ntop() 函数将这个字符串转换为人类可读的 IP 地址，并将结果存储在 $exp 中。然后，通过 echo 语句输出这个结果。