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archived-doc-pt-br/reference/datetime/dateperiod.xml
Leonardo Lara Rodrigues c07a4b8cd7 sync lines with en rev
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<?xml version="1.0" encoding="utf-8"?>
<!-- EN-Revision: 3a8c3e77df070a046c9d5b56b68926ca2d7e5ee3 Maintainer: leonardolara Status: ready --><!-- CREDITS: fabioluciano,ae,leonardolara -->
<reference xml:id="class.dateperiod" role="class" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xi="http://www.w3.org/2001/XInclude">
<title>A classe DatePeriod</title>
<titleabbrev>DatePeriod</titleabbrev>
<partintro>
<!-- {{{ DatePeriod intro -->
<section xml:id="dateperiod.intro">
&reftitle.intro;
<para>
Representa um período entre datas.
</para>
<para>
O período entre datas permite a interação entre um conjunto de datas e horários recorrentes a
intervalos regulares, durante um determinado período.
</para>
</section>
<!-- }}} -->
<section xml:id="dateperiod.synopsis">
&reftitle.classsynopsis;
<!-- {{{ Synopsis -->
<classsynopsis class="class">
<ooclass>
<classname>DatePeriod</classname>
</ooclass>
<oointerface>
<modifier>implements</modifier>
<interfacename>IteratorAggregate</interfacename>
</oointerface>
<classsynopsisinfo role="comment">&Constants;</classsynopsisinfo>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>const</modifier>
<type>int</type>
<varname linkend="dateperiod.constants.exclude-start-date">DatePeriod::EXCLUDE_START_DATE</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>const</modifier>
<type>int</type>
<varname linkend="dateperiod.constants.include-end-date">DatePeriod::INCLUDE_END_DATE</varname>
</fieldsynopsis>
<classsynopsisinfo role="comment">&Properties;</classsynopsisinfo>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>readonly</modifier>
<type class="union"><type>DateTimeInterface</type><type>null</type></type>
<varname linkend="dateperiod.props.start">start</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>readonly</modifier>
<type class="union"><type>DateTimeInterface</type><type>null</type></type>
<varname linkend="dateperiod.props.current">current</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>readonly</modifier>
<type class="union"><type>DateTimeInterface</type><type>null</type></type>
<varname linkend="dateperiod.props.end">end</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>readonly</modifier>
<type class="union"><type>DateInterval</type><type>null</type></type>
<varname linkend="dateperiod.props.interval">interval</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>readonly</modifier>
<type>int</type>
<varname linkend="dateperiod.props.recurrences">recurrences</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>readonly</modifier>
<type>bool</type>
<varname linkend="dateperiod.props.include-start-date">include_start_date</varname>
</fieldsynopsis>
<fieldsynopsis>
<modifier>public</modifier>
<modifier>readonly</modifier>
<type>bool</type>
<varname linkend="dateperiod.props.include-end-date">include_end_date</varname>
</fieldsynopsis>
<classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
<xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.dateperiod')/db:refentry/db:refsect1[@role='description']/descendant::db:constructorsynopsis[@role='DatePeriod'])">
<xi:fallback/>
</xi:include>
<xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.dateperiod')/db:refentry/db:refsect1[@role='description']/descendant::db:methodsynopsis[@role='DatePeriod'])">
<xi:fallback/>
</xi:include>
</classsynopsis>
<!-- }}} -->
</section>
<!-- {{{ DatePeriod constants -->
<section xml:id="dateperiod.constants">
&reftitle.constants;
<variablelist>
<varlistentry xml:id="dateperiod.constants.exclude-start-date">
<term>
<constant>DatePeriod::EXCLUDE_START_DATE</constant>
<type>int</type>
</term>
<listitem>
<para>Exclui a data inicial, utilizada em <function>DatePeriod::__construct</function>.</para>
</listitem>
</varlistentry>
<varlistentry xml:id="dateperiod.constants.include-end-date">
<term>
<constant>DatePeriod::INCLUDE_END_DATE</constant>
<type>int</type>
</term>
<listitem>
<para>Inclui a data final, utilizado em <function>DatePeriod::__construct</function>.</para>
</listitem>
</varlistentry>
</variablelist>
</section>
<!-- }}} -->
<section xml:id="dateperiod.props">
&reftitle.properties;
<variablelist>
<varlistentry xml:id="dateperiod.props.recurrences">
<term><varname>recurrences</varname></term>
<listitem>
<para>
O número mínimo de instâncias retornadas pelo iterador.
</para>
<para>
O número de recorrências que foi informado explicitamente no parâmetro
<varname>recurrences</varname> no construtor da instância de
<classname>DatePeriod</classname>, de forma que essa propriedade contém
este valor, <emphasis>mais</emphasis> um se a data inicial não foi excluída
através de <constant>DatePeriod::EXCLUDE_START_DATE</constant>,
<emphasis>mais</emphasis> um se a data final foi incluída através de
<constant>DatePeriod::INCLUDE_END_DATE</constant>.
</para>
<para>
Se o número de recorrências não foi informado explicitamente, então esta
propriedade conta o número mínimo de recorrências a retornar. Isto pode
ser <literal>0</literal>, <emphasis>mais</emphasis> um se a data inicial
não foi excluída através de
<constant>DatePeriod::EXCLUDE_START_DATE</constant>,
<emphasis>mais</emphasis> um se a data final não foi incluída através de
<constant>DatePeriod::INCLUDE_END_DATE</constant>.
</para>
<para>
<informalexample>
<programlisting role="php">
<![CDATA[
<?php
$start = new DateTime('2018-12-31 00:00:00');
$end = new DateTime('2021-12-31 00:00:00');
$interval = new DateInterval('P1M');
$recurrences = 5;
// recorrências informadas no construtor
$period = new DatePeriod($start, $interval, $recurrences, DatePeriod::EXCLUDE_START_DATE);
echo $period->recurrences, "\n";
$period = new DatePeriod($start, $interval, $recurrences);
echo $period->recurrences, "\n";
$period = new DatePeriod($start, $interval, $recurrences, DatePeriod::INCLUDE_END_DATE);
echo $period->recurrences, "\n";
// recorrências não informadas no construtor
$period = new DatePeriod($start, $interval, $end);
echo $period->recurrences, "\n";
$period = new DatePeriod($start, $interval, $end, DatePeriod::EXCLUDE_START_DATE);
echo $period->recurrences, "\n";
]]>
</programlisting>
&example.outputs;
<screen role="php">
<![CDATA[
5
6
7
1
0
]]>
</screen>
</informalexample>
</para>
<para>
Veja também <methodname>DatePeriod::getRecurrences</methodname>.
</para>
</listitem>
</varlistentry>
<varlistentry xml:id="dateperiod.props.include-end-date">
<term><varname>include_end_date</varname></term>
<listitem>
<para>
Informa se deve ser incluída a data final no conjunto de datas a retornar.
</para>
</listitem>
</varlistentry>
<varlistentry xml:id="dateperiod.props.include-start-date">
<term><varname>include_start_date</varname></term>
<listitem>
<para>
Informa se deve ser incluída a data inicial no conjunto de datas a retornar.
</para>
</listitem>
</varlistentry>
<varlistentry xml:id="dateperiod.props.start">
<term><varname>start</varname></term>
<listitem>
<para>
A data inicial do período.
</para>
</listitem>
</varlistentry>
<varlistentry xml:id="dateperiod.props.current">
<term><varname>current</varname></term>
<listitem>
<para>
Contém a data atual dentro do período.
</para>
</listitem>
</varlistentry>
<varlistentry xml:id="dateperiod.props.end">
<term><varname>end</varname></term>
<listitem>
<para>
Data final do período.
</para>
</listitem>
</varlistentry>
<varlistentry xml:id="dateperiod.props.interval">
<term><varname>interval</varname></term>
<listitem>
<para>
Uma especificação ISO 8601 do intervalo repetidor.
</para>
</listitem>
</varlistentry>
</variablelist>
</section>
<section role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.4.0</entry>
<entry>
As constantes de classe agora são tipadas.
</entry>
</row>
<row>
<entry>8.2.0</entry>
<entry>
A constante <constant>DatePeriod::INCLUDE_END_DATE</constant> e a propriedade
<property>include_end_date</property> foram adicionados.
</entry>
</row>
<row>
<entry>8.0.0</entry>
<entry>
<classname>DatePeriod</classname> agora implementa
<interfacename>IteratorAggregate</interfacename>.
Anteriormente implementava <interfacename>Traversable</interfacename>.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</section>
</partintro>
&reference.datetime.entities.dateperiod;
</reference>
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