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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.gmstrftime" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>gmstrftime</refname>
<refpurpose>Format a GMT/UTC time/date according to locale settings</refpurpose>
</refnamediv>
<refsynopsisdiv>
&warn.deprecated.function-8-1-0.alternatives;
<simplelist role="alternatives">
<member><function>gmdate</function></member>
<member><methodname>IntlDateFormatter::format</methodname></member>
</simplelist>
</refsynopsisdiv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier role="attribute">#[\Deprecated]</modifier>
<type class="union"><type>string</type><type>false</type></type><methodname>gmstrftime</methodname>
<methodparam><type>string</type><parameter>format</parameter></methodparam>
<methodparam choice="opt"><type class="union"><type>int</type><type>null</type></type><parameter>timestamp</parameter><initializer>&null;</initializer></methodparam>
</methodsynopsis>
<para>
Behaves the same as <function>strftime</function> except that the
time returned is Greenwich Mean Time (GMT). For example, when run
in Eastern Standard Time (GMT -0500), the first line below prints
"Dec 31 1998 20:00:00", while the second prints "Jan 01 1999
01:00:00".
</para>
<warning>
<para>
This function depends on operating system locale information, which might
be inconsistent with each other, or not available at all. Instead use the
<methodname>IntlDateFormatter::format</methodname> method.
</para>
</warning>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>format</parameter></term>
<listitem>
<para>
See description in <function>strftime</function>.
</para>
</listitem>
</varlistentry>
&date.timestamp.description;
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns a string formatted according to the given format string
using the given <parameter>timestamp</parameter> or the current
local time if no timestamp is given. Month and weekday names and
other language dependent strings respect the current locale set
with <function>setlocale</function>.
On failure, &false; is returned.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.0.0</entry>
<entry>
<parameter>timestamp</parameter> is nullable now.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>gmstrftime</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
setlocale(LC_TIME, 'en_US');
echo strftime("%b %d %Y %H:%M:%S", mktime(20, 0, 0, 12, 31, 98)) . "\n";
echo gmstrftime("%b %d %Y %H:%M:%S", mktime(20, 0, 0, 12, 31, 98)) . "\n";
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><methodname>IntlDateFormatter::format</methodname></member>
<member><methodname>DateTimeInterface::format</methodname></member>
<member><function>strftime</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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