📄 function.socket-getpeername.html
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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>Queries the remote side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type</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.socket-get-option.html">socket_get_option</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.socket-getsockname.html">socket_getsockname</a></div> <div class="up"><a href="ref.sockets.html">Socket Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.socket-getpeername" class="refentry"> <div class="refnamediv"> <h1 class="refname">socket_getpeername</h1> <p class="verinfo">(PHP 4 >= 4.0.7, PHP 5)</p><p class="refpurpose"><span class="refname">socket_getpeername</span> — <span class="dc-title">Queries the remote side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>socket_getpeername</b></b></span> ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$socket</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter reference">&$address</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter reference">&$port</tt></span> ] )</div> <p class="para rdfs-comment"> Queries the remote side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">socket</tt></i></span> <dd> <p class="para"> A valid socket resource created with <a href="function.socket-create.html" class="function">socket_create()</a> or <a href="function.socket-accept.html" class="function">socket_accept()</a>. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">address</tt></i></span> <dd> <p class="para"> If the given socket is of type <b><tt>AF_INET</tt></b> or <b><tt>AF_INET6</tt></b>, <b>socket_getpeername()</b> will return the peers (remote) <em class="emphasis">IP address</em> in appropriate notation (e.g. <i>127.0.0.1</i> or <i>fe80::1</i>) in the <i><tt class="parameter">address</tt></i> parameter and, if the optional <i><tt class="parameter">port</tt></i> parameter is present, also the associated port. </p> <p class="para"> If the given socket is of type <b><tt>AF_UNIX</tt></b>, <b>socket_getpeername()</b> will return the Unix filesystem path (e.g. <i>/var/run/daemon.sock</i>) in the <i><tt class="parameter">address</tt></i> parameter. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">port</tt></i></span> <dd> <p class="para"> If given, this will hold the port associated to <i><tt class="parameter">address</tt></i>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure. <b>socket_getpeername()</b> may also return <b><tt>FALSE</tt></b> if the socket type is not any of <b><tt>AF_INET</tt></b>, <b><tt>AF_INET6</tt></b>, or <b><tt>AF_UNIX</tt></b>, in which case the last socket error code is <em class="emphasis">not</em> updated. </p> </div> <div class="refsect1 notes"> <h3 class="title">Notes</h3> <blockquote><p><b class="note">Note</b>: <b>socket_getpeername()</b> should not be used with <b><tt>AF_UNIX</tt></b> sockets created with <a href="function.socket-accept.html" class="function">socket_accept()</a>. Only sockets created with <a href="function.socket-connect.html" class="function">socket_connect()</a> or a primary server socket following a call to <a href="function.socket-bind.html" class="function">socket_bind()</a> will return meaningful values. <br /> </p></blockquote> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.socket-getsockname.html" class="function" rel="rdfs-seeAlso">socket_getsockname()</a></li> <li class="member"><a href="function.socket-last-error.html" class="function" rel="rdfs-seeAlso">socket_last_error()</a></li> <li class="member"><a href="function.socket-strerror.html" class="function" rel="rdfs-seeAlso">socket_strerror()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.socket-get-option.html">socket_get_option</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.socket-getsockname.html">socket_getsockname</a></div> <div class="up"><a href="ref.sockets.html">Socket 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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