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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.8 $ -->
<!-- splitted from ./en/functions/datetime.xml, last change in rev 1.2 -->
<refentry id="function.gmmktime">
<refnamediv>
<refname>gmmktime</refname>
<refpurpose>Get Unix timestamp for a GMT date</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>int</type><methodname>gmmktime</methodname>
<methodparam choice="opt"><type>int</type><parameter>hour</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>minute</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>second</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>month</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>day</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>year</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>is_dst</parameter></methodparam>
</methodsynopsis>
<para>
Identical to <function>mktime</function> except the passed
parameters represents a GMT date.
</para>
<para>
Parameters always represent a GMT date so <parameter>is_dst</parameter>
doesn't influence the result.
</para>
<para>
Like <function>mktime</function>, arguments may be left out in order
from right to left, with any omitted arguments being set to the
current corresponding GMT value.
</para>
<para>
<note>
<simpara>
<function>gmmktime</function> internaly uses <function>mktime</function>
so only times valid in derived local time can be used.
</simpara>
</note>
<example>
<title><function>gmmktime</function> on Windows boundary</title>
<programlisting role="php">
<![CDATA[
<?php
gmmktime(0, 0, 0, 1, 1, 1970); // valid in GMT and west, invalid in east
?>
]]>
</programlisting>
</example>
</para>
<para>
See also <function>mktime</function>,
<function>date</function> and <function>time</function>.
</para>
</refsect1>
</refentry>
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