construct.xml

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<refentry xml:id="datetimeimmutable.construct" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>DateTimeImmutable::__construct</refname>
  <refname>date_create_immutable</refname>
  <refpurpose>Devuelve un nuevo objeto DateTimeImmutable</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <para>&style.oop;</para>
  <constructorsynopsis role="DateTimeImmutable">
   <modifier>public</modifier> <methodname>DateTimeImmutable::__construct</methodname>
   <methodparam choice="opt"><type>string</type><parameter>datetime</parameter><initializer>"now"</initializer></methodparam>
   <methodparam choice="opt"><type class="union"><type>DateTimeZone</type><type>null</type></type><parameter>timezone</parameter><initializer>&null;</initializer></methodparam>
  </constructorsynopsis>
  <para>&style.procedural;</para>
  <methodsynopsis>
   <type class="union"><type>DateTimeImmutable</type><type>false</type></type><methodname>date_create_immutable</methodname>
   <methodparam choice="opt"><type>string</type><parameter>datetime</parameter><initializer>"now"</initializer></methodparam>
   <methodparam choice="opt"><type class="union"><type>DateTimeZone</type><type>null</type></type><parameter>timezone</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>
  <para>
   Devuelve un nuevo objeto DateTimeImmutable.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   <varlistentry>
    <term><parameter>datetime</parameter></term>
    <listitem>
     <para>&date.formats.parameter;</para>
     <para>
      Introduzca <literal>"now"</literal> aquí para obtener el instante actual cuando se emplee
      el parámetro <parameter>$timezone</parameter>.
     </para>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>timezone</parameter></term>
    <listitem>
     <para>
      Un objeto <classname>DateTimeZone</classname> que representa la
      zona horaria de <parameter>$datetime</parameter>.
     </para>
     <para>
      Si se omite <parameter>$timezone</parameter> o
      es &null;, se usará la zona horaria actual.
     </para>
     <note>
      <para>
       El parámetro <parameter>$timezone</parameter>
       y la zona horaria actuales se ignoran cuando el
       parámetro <parameter>$time</parameter>
       es una marca temporal de UNIX (p.ej. <literal>@946684800</literal>)
       o especifica una zona horaria
       (p.ej. <literal>2010-01-28T15:00:00+02:00</literal>, o
       <literal>2010-07-05T06:00:00Z</literal>).
      </para>
     </note>
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Devuelve una nueva instancia de DateTimeImmutable.
  </para>
 </refsect1>

 <refsect1 role="errors">
  &reftitle.errors;
  <para>
    Si se pasa una cadena de fecha/hora incorrecta,
    lanza <exceptionname>DateMalformedStringException</exceptionname>.
    Hasta PHP 8.3, lanzaba <exceptionname>Exception</exceptionname>.
  </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>8.3.0</entry>
       <entry>
        Ahora lanza
        <exceptionname>DateMalformedStringException</exceptionname> si
        se pasa una cadena incorrecta, en vez de
        <exceptionname>Exception</exceptionname>.
       </entry>
      </row>
      <row>
       <entry>7.1.0</entry>
       <entry>Desde ahora los microsegundos se rellenan con el valor actual. No con '00000'.</entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <example>
   <title>Ejemplo de <function>DateTimeImmutable::__construct</function></title>
   <para>&style.oop;</para>
   <programlisting role="php">
<![CDATA[
<?php
try {
    $date = new DateTimeImmutable('2000-01-01');
} catch (Exception $e) {
    echo $e->getMessage();
    exit(1);
}

echo $date->format('Y-m-d');
?>
]]>
   </programlisting>
   <para>&style.procedural;</para>
   <programlisting role="php">
<![CDATA[
<?php
$date = date_create('2000-01-01');
if (!$date) {
    $e = date_get_last_errors();
    foreach ($e['errors'] as $error) {
        echo "$error\n";
    }
    exit(1);
}

echo date_format($date, 'Y-m-d');
?>
]]>
   </programlisting>
   &examples.outputs;
   <screen>
<![CDATA[
2000-01-01
]]>
   </screen>
  </example>
  <example>
   <title>Complejidades de <function>DateTimeImmutable::__construct</function></title>
   <programlisting role="php">
<![CDATA[
<?php
// Especificando una fecha/hora en la zona horaria de su ordenador.

$date = new DateTimeImmutable('2000-01-01');
echo $date->format('Y-m-d H:i:sP') . "\n";

// Especificando una fecha/hora en una zona horaria específica.
$date = new DateTimeImmutable('2000-01-01', new DateTimeZone('Pacific/Nauru'));
echo $date->format('Y-m-d H:i:sP') . "\n";

// Fecha/hora actual en la zona horaria de su ordenador.
 Current date/time in your computer's time zone.
$date = new DateTimeImmutable();
echo $date->format('Y-m-d H:i:sP') . "\n";

// Fecha/hora actual en la zona horaria especificada.
$date = new DateTimeImmutable('now', new DateTimeZone('Pacific/Nauru'));
echo $date->format('Y-m-d H:i:sP') . "\n";

// Usando una marca temporal de UNIX (UNIX timestamp). Observe que el resultado está en la zona horaria UTC.
$date = new DateTimeImmutable('@946684800');
echo $date->format('Y-m-d H:i:sP') . "\n";

// Completado de los valores inexistentes.
$date = new DateTimeImmutable('2000-02-30');
echo $date->format('Y-m-d H:i:sP') . "\n";
?>
]]>
   </programlisting>
   &example.outputs.similar;
   <screen>
<![CDATA[
2000-01-01 00:00:00-05:00
2000-01-01 00:00:00+12:00
2010-04-24 10:24:16-04:00
2010-04-25 02:24:16+12:00
2000-01-01 00:00:00+00:00
2000-03-01 00:00:00-05:00
]]>
   </screen>
  </example>

  <example>
   <title>Cambiando la zona horaria asociada</title>
   <programlisting role="php">
<![CDATA[
<?php
$timeZone = new \DateTimeZone('Asia/Tokyo');

$time = new \DateTimeImmutable();
$time = $time->setTimezone($timeZone);

echo $time->format('Y/m/d H:i:s'), "\n";
?>
]]>
   </programlisting>
   &example.outputs.similar;
   <screen>
<![CDATA[
2022/08/12 23:49:23
]]>
   </screen>
  </example>

  <example>
   <title>Usando una fecha/hora relativas</title>
   <programlisting role="php">
<![CDATA[
<?php
$time = new \DateTimeImmutable("-1 year");

echo $time->format('Y/m/d H:i:s'), "\n";
?>
]]>
   </programlisting>
   &example.outputs.similar;
   <screen>
<![CDATA[
2021/08/12 15:43:51
]]>
   </screen>
  </example>
 </refsect1>

</refentry>
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