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<?xml version='1.0' encoding='iso-8859-1'?>
<!-- $Revision: 1.5 $ -->
<refentry id="function.idate">
<refnamediv>
<refname>idate</refname>
<refpurpose>Format a local time/date as integer</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>int</type><methodname>idate</methodname>
<methodparam><type>string</type><parameter>format</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>timestamp</parameter></methodparam>
</methodsynopsis>
<para>
Returns a number formatted according to the given format string using the
given integer <parameter>timestamp</parameter> or the current local time
if no timestamp is given. In other words, <parameter>timestamp</parameter>
is optional and defaults to the value of <function>time</function>.
</para>
<para>
Unlike the function <function>date</function>, <function>idate</function>
accepts just one char in the <parameter>format</parameter> parameter.
</para>
<para>
<table>
<title>The following characters are recognized in the
<parameter>format</parameter> parameter string</title>
<tgroup cols="2">
<thead>
<row>
<entry><parameter>format</parameter> character</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>B</literal></entry>
<entry>Swatch Beat/Internet Time</entry>
</row>
<row>
<entry><literal>d</literal></entry>
<entry>Day of the month</entry>
</row>
<row>
<entry><literal>h</literal></entry>
<entry>Hour (12 hour format)</entry>
</row>
<row>
<entry><literal>H</literal></entry>
<entry>Hour (24 hour format)</entry>
</row>
<row>
<entry><literal>i</literal></entry>
<entry>Minutes</entry>
</row>
<row>
<entry><literal>I</literal></entry>
<entry>returns <literal>1</literal> if DST is activated,
<literal>0</literal> otherwise</entry>
</row>
<row>
<entry><literal>L</literal></entry>
<entry>returns <literal>1</literal> for leap year,
<literal>0</literal> otherwise</entry>
</row>
<row>
<entry><literal>m</literal></entry>
<entry>Month number</entry>
</row>
<row>
<entry><literal>s</literal></entry>
<entry>Seconds</entry>
</row>
<row>
<entry><literal>t</literal></entry>
<entry>Days in current month</entry>
</row>
<row>
<entry><literal>U</literal></entry>
<entry>Seconds since the Unix Epoch - January 1 1970 00:00:00 GMT -
this is the same as <function>time</function></entry>
</row>
<row>
<entry><literal>w</literal></entry>
<entry>Day of the week (<literal>0</literal> on Sunday)</entry>
</row>
<row>
<entry><literal>W</literal></entry>
<entry>ISO-8601 week number of year, weeks starting on
Monday</entry>
</row>
<row>
<entry><literal>y</literal></entry>
<entry>Year (1 or 2 digits - check note below)</entry>
</row>
<row>
<entry><literal>Y</literal></entry>
<entry>Year (4 digits)</entry>
</row>
<row>
<entry><literal>z</literal></entry>
<entry>Day of the year</entry>
</row>
<row>
<entry><literal>Z</literal></entry>
<entry>Timezone offset in seconds</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
<note>
<para>
As <function>idate</function> returns always an <type>integer</type> and
as they can't start with a "0", <function>idate</function> may return less
digits then you would expect. See the example below:
</para>
</note>
<para>
<informalexample>
<programlisting role="php">
<![CDATA[
<?php
$timestamp = strtotime('1st January 2004'); //1072915200
// this prints the year in a two digit format
// however, as this would start with a "0", it
// only prints "4"
echo idate('y', $timestamp);
?>
]]>
</programlisting>
</informalexample>
</para>
<para>
See also <function>date</function> and
<function>time</function>.
</para>
</refsect1>
</refentry>
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