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createfromdatestring.xml
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288 lines (273 loc) · 7.01 KB
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 3a8c3e77df070a046c9d5b56b68926ca2d7e5ee3 Maintainer: Marqitos Status: ready -->
<!-- Reviewed: no -->
<refentry xml:id="dateinterval.createfromdatestring" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>DateInterval::createFromDateString</refname>
<refpurpose>Establece un objeto DateInterval desde las partes relativas de una cadena</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<para>&style.oop;</para>
<methodsynopsis role="DateInterval">
<modifier>public</modifier> <modifier>static</modifier> <type>DateInterval</type><methodname>DateInterval::createFromDateString</methodname>
<methodparam><type>string</type><parameter>datetime</parameter></methodparam>
</methodsynopsis>
<para>&style.procedural;</para>
<methodsynopsis>
<type class="union"><type>DateInterval</type><type>false</type></type><methodname>date_interval_create_from_date_string</methodname>
<methodparam><type>string</type><parameter>datetime</parameter></methodparam>
</methodsynopsis>
<para>
Usas los analizadores de fecha/hora como los usados en el constructor de
<classname>DateTimeImmutable</classname> para crear un
<classname>DateInterval</classname> desde las partes relativas de la
cadena analizada.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>datetime</parameter></term>
<listitem>
<para>
Una fecha con partes relativas. Específicamente, los
<link linkend="datetime.formats.relative">formatos relativos</link>
admitidos por el analizador utilizados por <classname>DateTimeImmutable</classname>,
<classname>DateTime</classname>, y <function>strtotime</function>
serán los empleados para construir el objeto DateInterval
</para>
<para>
Para usar un string con formato ISO-8601 como <literal>P7D</literal>, debes
usar <methodname>DateInterval::__construct</methodname>.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Devuelve <classname>DateInterval</classname> en caso de éxito.
&return.falseforfailure.style.procedural;
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
Solo en la API Orientada a Objetos: Si se pasa una cadena de fecha/hora inválida,
se lanza <exceptionname>DateMalformedStringException</exceptionname>.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.3.0</entry>
<entry>
<methodname>DateInterval::createFromDateString</methodname> ahora lanza
<exceptionname>DateMalformedStringException</exceptionname> si se pasa
una cadena inválida. Anteriormente, devolvía <literal>false</literal>,
y emitía una advertencia.
<function>date_interval_create_from_date_string</function> no ha
cambiado.
</entry>
</row>
<row>
<entry>8.2.0</entry>
<entry>
Las propiedades <literal>from_string</literal> y
<literal>date_string</literal> solo serán visibles cuando se crea un
<classname>DateInterval</classname> con este método.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Analizando intervalos de fechas válidos</title>
<programlisting role="php" annotations="non-interactive">
<![CDATA[
<?php
// Each set of intervals is equal.
$i = new DateInterval('P1D');
$i = DateInterval::createFromDateString('1 day');
$i = new DateInterval('P2W');
$i = DateInterval::createFromDateString('2 weeks');
$i = new DateInterval('P3M');
$i = DateInterval::createFromDateString('3 months');
$i = new DateInterval('P4Y');
$i = DateInterval::createFromDateString('4 years');
$i = new DateInterval('P1Y1D');
$i = DateInterval::createFromDateString('1 year + 1 day');
$i = new DateInterval('P1DT12H');
$i = DateInterval::createFromDateString('1 day + 12 hours');
$i = new DateInterval('PT3600S');
$i = DateInterval::createFromDateString('3600 seconds');
]]>
</programlisting>
</example>
</para>
<para>
<example>
<title>Analizando combinaciones e intervalos negativos</title>
<programlisting role="php">
<![CDATA[
<?php
$i = DateInterval::createFromDateString('62 weeks + 1 day + 2 weeks + 2 hours + 70 minutes');
echo $i->format('%d %h %i'), "\n";
$i = DateInterval::createFromDateString('1 year - 10 days');
echo $i->format('%y %d'), "\n";
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
449 2 70
1 -10
]]>
</screen>
</example>
</para>
<para>
<example>
<title>Analizando intervalos de fechas relativas especiales</title>
<programlisting role="php">
<![CDATA[
<?php
$i = DateInterval::createFromDateString('last day of next month');
var_dump($i);
$i = DateInterval::createFromDateString('last weekday');
var_dump($i);
]]>
</programlisting>
&example.outputs.82;
<screen role="php">
<![CDATA[
object(DateInterval)#1 (2) {
["from_string"]=>
bool(true)
["date_string"]=>
string(22) "last day of next month"
}
object(DateInterval)#2 (2) {
["from_string"]=>
bool(true)
["date_string"]=>
string(12) "last weekday"
}
]]>
</screen>
&example.outputs.8.similar;
<screen role="php">
<![CDATA[
object(DateInterval)#1 (16) {
["y"]=>
int(0)
["m"]=>
int(1)
["d"]=>
int(0)
["h"]=>
int(0)
["i"]=>
int(0)
["s"]=>
int(0)
["f"]=>
float(0)
["weekday"]=>
int(0)
["weekday_behavior"]=>
int(0)
["first_last_day_of"]=>
int(2)
["invert"]=>
int(0)
["days"]=>
bool(false)
["special_type"]=>
int(0)
["special_amount"]=>
int(0)
["have_weekday_relative"]=>
int(0)
["have_special_relative"]=>
int(0)
}
object(DateInterval)#2 (16) {
["y"]=>
int(0)
["m"]=>
int(0)
["d"]=>
int(0)
["h"]=>
int(0)
["i"]=>
int(0)
["s"]=>
int(0)
["f"]=>
float(0)
["weekday"]=>
int(0)
["weekday_behavior"]=>
int(0)
["first_last_day_of"]=>
int(0)
["invert"]=>
int(0)
["days"]=>
bool(false)
["special_type"]=>
int(1)
["special_amount"]=>
int(-1)
["have_weekday_relative"]=>
int(0)
["have_special_relative"]=>
int(1)
}
]]>
</screen>
</example>
</para>
</refsect1>
</refentry>
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Local variables:
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sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->