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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Get port number associated with an Internet service and protocol</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.getprotobynumber.html">getprotobynumber</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.getservbyport.html">getservbyport</a></div> <div class="up"><a href="ref.network.html">Network Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.getservbyname" class="refentry"> <div class="refnamediv"> <h1 class="refname">getservbyname</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">getservbyname</span> — <span class="dc-title">Get port number associated with an Internet service and protocol</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><b>getservbyname</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$service</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$protocol</tt></span> )</div> <p class="para rdfs-comment"> <b>getservbyname()</b> returns the Internet port which corresponds to <i><tt class="parameter">service</tt></i> for the specified <i><tt class="parameter">protocol</tt></i> as per <var class="filename">/etc/services</var>. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">service</tt></i></span> <dd> <p class="para"> The Internet service name, as a string. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">protocol</tt></i></span> <dd> <p class="para"> <i><tt class="parameter">protocol</tt></i> is either <i>"tcp"</i> or <i>"udp"</i> (in lowercase). </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the port number, or <b><tt>FALSE</tt></b> if <i><tt class="parameter">service</tt></i> or <i><tt class="parameter">protocol</tt></i> is not found. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>getservbyname()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$services </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'http'</span><span style="color: #007700">, </span><span style="color: #DD0000">'ftp'</span><span style="color: #007700">, </span><span style="color: #DD0000">'ssh'</span><span style="color: #007700">, </span><span style="color: #DD0000">'telnet'</span><span style="color: #007700">, </span><span style="color: #DD0000">'imap'</span><span style="color: #007700">,<br /></span><span style="color: #DD0000">'smtp'</span><span style="color: #007700">, </span><span style="color: #DD0000">'nicname'</span><span style="color: #007700">, </span><span style="color: #DD0000">'gopher'</span><span style="color: #007700">, </span><span style="color: #DD0000">'finger'</span><span style="color: #007700">, </span><span style="color: #DD0000">'pop3'</span><span style="color: #007700">, </span><span style="color: #DD0000">'www'</span><span style="color: #007700">);<br /><br />foreach (</span><span style="color: #0000BB">$services </span><span style="color: #007700">as </span><span style="color: #0000BB">$service</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$port </span><span style="color: #007700">= </span><span style="color: #0000BB">getservbyname</span><span style="color: #007700">(</span><span style="color: #0000BB">$service</span><span style="color: #007700">, </span><span style="color: #DD0000">'tcp'</span><span style="color: #007700">);<br /> echo </span><span style="color: #0000BB">$service </span><span style="color: #007700">. </span><span style="color: #DD0000">": " </span><span style="color: #007700">. </span><span style="color: #0000BB">$port </span><span style="color: #007700">. </span><span style="color: #DD0000">"<br />\n"</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.getservbyport.html" class="function" rel="rdfs-seeAlso">getservbyport()</a></li> <li class="member"> <a href="http://www.iana.org/assignments/port-numbers" class="link external">» http://www.iana.org/assignments/port-numbers</a> for a complete list of port numbers. </li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.getprotobynumber.html">getprotobynumber</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.getservbyport.html">getservbyport</a></div> <div class="up"><a href="ref.network.html">Network Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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