php-doc-en/reference/network/functions/gethostbyaddr.xml
2020-12-26 19:26:31 +00:00

94 lines
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XML

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.gethostbyaddr" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>gethostbyaddr</refname>
<refpurpose>
Get the Internet host name corresponding to a given IP address
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type class="union"><type>string</type><type>false</type></type><methodname>gethostbyaddr</methodname>
<methodparam><type>string</type><parameter>ip</parameter></methodparam>
</methodsynopsis>
<para>
Returns the host name of the Internet host specified by
<parameter>ip</parameter>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>ip</parameter></term>
<listitem>
<para>
The host IP address.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the host name on success, the unmodified <parameter>ip</parameter>
on failure, or &false; on malformed input.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>A simple <function>gethostbyaddr</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);
echo $hostname;
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>gethostbyname</function></member>
<member><function>gethostbynamel</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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