<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->

<book xml:id="book.datetime" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <?phpdoc extension-membership="core"?>
 <title>Date and Time</title>
 <titleabbrev>Date/Time</titleabbrev>

 <!-- {{{ preface -->
 <preface xml:id="intro.datetime">
  &reftitle.intro;
  <para>
   The <classname>DateTimeImmutable</classname> and related classes allow you
   represent date/time information. The objects can be created by passing in a
   string presentation of date/time information, or from the current system's
   time.
  </para>
  <para>
   A rich set of methods is supplied to modify and format this information
   as well, including handling timezones and DST transitions.
  </para>
  <para>
   The date/time features in PHP implements the ISO 8601 calendar, which is a
   <link xlink:href="&url.proleptic-gregorian-calendar;">proleptic Gregorian
   calendar</link> which implements the current leap-day rules from before the
   Gregorian calendar was in place, and also includes the year
   <literal>0</literal> as the year number in between <literal>-1
   BCE</literal> and <literal>1 CE</literal>. Leap seconds are not supported.
  </para>
  <para>
   The date and time information is internally stored as a 64-bit number so
   all conceivably useful dates (including negative years) are supported. The
   range is from about 292 billion years in the past to the same in the
   future.
  </para>
  <note>
   <simpara>
    The timezones referenced in this section can be found in the
    <xref linkend="timezones"/>.
   </simpara>
  </note>
 </preface>
 <!-- }}} -->

 &reference.datetime.setup;
 &reference.datetime.constants;
 &reference.datetime.examples;

 &reference.datetime.datetime;
 &reference.datetime.datetimeimmutable;
 &reference.datetime.datetimeinterface;
 &reference.datetime.datetimezone;
 &reference.datetime.dateinterval;
 &reference.datetime.dateperiod;

 &reference.datetime.reference;

 <article xml:id="datetime.error.tree">
  <title>Date/Time Errors and Exceptions</title>

  <itemizedlist>
   <listitem>
    <simpara><exceptionname>DateError</exceptionname> (extends <exceptionname>Error</exceptionname>)</simpara>
    <itemizedlist>
     <listitem>
      <simpara><exceptionname>DateObjectError</exceptionname></simpara>
      <simpara><exceptionname>DateRangeError</exceptionname></simpara>
     </listitem>
    </itemizedlist>
   </listitem>
   <listitem>
    <simpara><exceptionname>DateException</exceptionname> (extends <exceptionname>Exception</exceptionname>)</simpara>
    <itemizedlist>
     <listitem>
      <itemizedlist>
       <listitem><simpara><exceptionname>DateInvalidOperationException</exceptionname></simpara></listitem>
       <listitem><simpara><exceptionname>DateInvalidTimezoneException</exceptionname></simpara></listitem>
       <listitem><simpara><exceptionname>DateMalformedIntervalStringException</exceptionname></simpara></listitem>
       <listitem><simpara><exceptionname>DateMalformedPeriodStringException</exceptionname></simpara></listitem>
       <listitem><simpara><exceptionname>DateMalformedStringException</exceptionname></simpara></listitem>
      </itemizedlist>
     </listitem>
    </itemizedlist>
   </listitem>
  </itemizedlist>
 </article>

 &reference.datetime.formats;
 &reference.datetime.timezones;

 &reference.datetime.dateerror;
 &reference.datetime.dateobjecterror;
 &reference.datetime.daterangeerror;
 &reference.datetime.dateexception;
 &reference.datetime.dateinvalidoperationexception;
 &reference.datetime.dateinvalidtimezoneexception;
 &reference.datetime.datemalformedintervalstringexception;
 &reference.datetime.datemalformedperiodstringexception;
 &reference.datetime.datemalformedstringexception;

</book>

<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->

