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<title>Get Internet service which corresponds to port and protocol</title>
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<h1 class="refname">getservbyport</h1>
<p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">getservbyport</span> — <span class="dc-title">Get Internet service which corresponds to port and protocol</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.getservbyport-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>getservbyport</strong></span>
( <span class="methodparam"><span class="type">int</span> <code class="parameter">$port</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$protocol</code></span>
)</div>
<p class="para rdfs-comment">
<span class="function"><strong>getservbyport()</strong></span> returns the Internet service
associated with <em><code class="parameter">port</code></em> for the specified
<em><code class="parameter">protocol</code></em> as per <var class="filename">/etc/services</var>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.getservbyport-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">port</code></em></span>
<dd>
<p class="para">
The port number.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">protocol</code></em></span>
<dd>
<p class="para">
<em><code class="parameter">protocol</code></em> is either <em>"tcp"</em>
or <em>"udp"</em> (in lowercase).
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.getservbyport-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the Internet service name as a string.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.getservbyport-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.getservbyname.html" class="function" rel="rdfs-seeAlso">getservbyname()</a> - Get port number associated with an Internet service and protocol</span></li>
</ul>
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