getservbyname

名称:getservbyname

分类:网络Network

所属语言:php

一句话介绍:返回给定 Internet 服务和协议的端口号。

实例

一个 getservbyname() 的例子：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$portnum</span> <span class="token operator">=</span> <span class="token function">getservbyname</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"http"</span><span class="token punctuation">,</span> <span class="token string double-quoted-string">"tcp"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token variable">$portnum</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>